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Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 71| Part 6| June 2015| Pages 654-659

Crystal structures of four indole derivatives as possible cannabinoid allosteric antagonists

aDepartment of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland, and bFundação Oswaldo Cruz, Instituto de Tecnologia em Fármacos-Far Manguinhos, 21041-250 Rio de Janeiro, RJ, Brazil
*Correspondence e-mail: l.trembleau@abdn.ac.uk, w.harrison@abdn.ac.uk

Edited by A. J. Lough, University of Toronto, Canada (Received 21 April 2015; accepted 29 April 2015; online 20 May 2015)

The crystal structures of four indole derivatives with various substituents at the 2-, 3- and 5-positions of the ring system are described, namely, ethyl 3-(5-chloro-2-phenyl-1H-indol-3-yl)-3-phenyl­propano­ate, C25H22ClNO2, (I), 2-bromo-3-(2-nitro-1-phenyl­eth­yl)-1H-indole, C16H13BrN2O2, (II), 5-meth­oxy-3-(2-nitro-1-phenyl­eth­yl)-2-phenyl-1H-indole, C23H20N2O3, (III), and 5-chloro-3-(2-nitro-1-phenyl­eth­yl)-2-phenyl-1H-indole, C22H17ClN2O2, (IV). The dominant inter­molecular inter­action in each case is an N—H⋯O hydrogen bond, which generates either chains or inversion dimers. Weak C—H⋯O, C—H⋯π and ππ inter­actions occur in these structures but there is no consistent pattern amongst them. Two of these compounds act as modest enhancers of CB1 cannabanoid signalling and two are inactive.

1. Chemical context

The indole ring system is an important element of many natural and synthetic mol­ecules with important biological activities (Biswal et al., 2012[Biswal, S., Sahoo, U., Sethy, S., Kumar, H. K. S. & Banerjee, M. (2012). Asian J. Pharm. Clin. Res. 5, 1-6.]; Kaushik et al., 2013[Kaushik, N. K., Kaushik, N., Attri, P., Kumar, N., Kim, C. H., Verma, A. K. & Choi, E. H. (2013). Molecules, 18, 6620-6662.]; Sharma et al., 2010[Sharma, V., Kumar, P. & Pathaka, D. J. (2010). J. Heterocycl. Chem. 47, 491-501.]). As part of our ongoing studies in this area, a group of indole derivatives with different substituents at the 2, 3 and 5-positions of the ring system were synthesised and tested as possible cannabinoid allosteric antagonists (Kerr, 2013[Kerr, J. (2013). PhD thesis, University of Aberdeen, Scotland.]). These compounds are analogues of 3-(2-nitro-1-phenyl­eth­yl)-2-phenyl-1H-indole (known as F087; see scheme), a positive allosteric modulator of CB1 (Adam et al., 2007[Adam, L., Salois, D., Rihakova, L., Lapointe, S., St-Onge, S., Labrecque, J. & Payza, K. (2007). Poster presented at The 17th Annual Symposium on the Cannabinoids, Quebec, Canada. Abstract available from http://www.cannabinoidsociety.org]).

[Scheme 1]

We now report the crystal structures of four of the compounds from that study, viz. ethyl 3-(5-chloro-2-phenyl-1H-indol-3-yl)-3-phenyl­propano­ate, (I)[link], 2-bromo-3-(2-nitro-1-phenyl­eth­yl)-1H-indole, (II)[link], 5-meth­oxy-3-(2-nitro-1-phenyl­eth­yl)-2-phenyl-1H-indole, (III)[link], and 5-chloro-3-(2-nitro-1-phenyl­eth­yl)-2-phenyl-1H-indole, (IV)[link]. Compounds (III)[link] and (IV)[link] were found to act as moderate enhancers of CB1 signalling at 1 µM concentration (Kerr, 2013[Kerr, J. (2013). PhD thesis, University of Aberdeen, Scotland.]) but compounds (I)[link] and (II)[link] were inactive.

2. Structural commentary

Each compound crystallizes in a centrosymmetric space group [Pbcn for (I)[link], P21/c for (II)[link] and P[\overline{1}] for (III)[link] and (IV)] with one mol­ecule in the asymmetric unit: in each structure, the stereogenic carbon atom (C9) was assigned an arbitrary R configuration. All the bond lengths and angles in these compounds lie within their expected ranges and full details are available in the CIF.

The mol­ecular structure of (I)[link] is illustrated in Fig. 1[link]. The deviations of atoms Cl1, C9 and C20 from the mean plane (r.m.s. deviation = 0.033 Å) of the indole ring system are 0.0293 (17), −0.156 (2) and −0.008 (2) Å, respectively. The larger deviation for C9 may arise from the steric crowding around it. The dihedral angle between the indole ring system and the C20-phenyl ring is 54.07 (4)° and the C7—C8—C20—C21 torsion angle is 53.7 (3)°. This twisting facilitates the formation of an intra­molecular C—H⋯O inter­action (Table 1[link]), which generates an S(9) ring. Atom H9 is close to eclipsed with C8 (C8—C7—C9—H9 = 2°) and the C14 phenyl ring and the C10-bonded ester groups project to opposite sides of the indole ring, as qu­anti­fied by the C8—C7—C9—C14 and C8—C7—C9—C10 torsion angles of 119.22 (17) and −115.32 (18)°, respectively. Looking down the C9—C7 bond with C8 facing upwards, the C14-phenyl group lies to the left of the indole ring system and the ester group to the right. With respect to the C9—C10 bond, atoms C11 and C14 have an anti disposition [C14—C9—C10—C11 = 175.39 (13)°]. The C11—O1—C12—C13 torsion angle is −81.27 (19)° and the dihedral angle between the indole ring system and the C14 phenyl ring is 86.55 (4)°.

Table 1
Hydrogen-bond geometry (Å, °) for (I)[link]

Cg2 and Cg4 are the centroids of the C1–C6 and C20–C25 rings, respectively.

D—H⋯A D—H H⋯A DA D—H⋯A
C21—H21⋯O2 0.93 2.34 3.258 (2) 169
N1—H1⋯O2i 0.91 (2) 1.95 (2) 2.8310 (18) 163.0 (18)
C10—H10ACg4ii 0.97 2.93 3.8022 (18) 150
C12—H12ACg2iii 0.97 2.97 3.702 (2) 133
C16—H16⋯Cg4iv 0.93 2.78 3.643 (2) 154
C19—H19⋯Cg2i 0.93 2.96 3.7860 (18) 149
Symmetry codes: (i) [-x+{\script{1\over 2}}, y-{\script{1\over 2}}, z]; (ii) [-x-{\script{1\over 2}}, y-{\script{1\over 2}}, z]; (iii) -x+1, -y+1, -z; (iv) [-x+1, y, -z+{\script{1\over 2}}].
[Figure 1]
Figure 1
The mol­ecular structure of (I)[link], showing 50% displacement ellipsoids. The double-dashed line indicates a weak C—H⋯O hydrogen bond.

The mol­ecular structure of (II)[link] is shown in Fig. 2[link]. Atoms Br1 and C9 deviate from the mean plane of the indole ring system (r.m.s. deviation = 0.011 Å) by 0.073 (3) and 0.134 (4) Å, respectively. Again, the larger deviation of C9 can be ascribed to steric crowding. The substituents bonded to the 3-position of the ring in (II)[link] are characterized by the C8—C7—C9—H9 torsion angle of −15° and the corresponding C8—C7—C9—C11 and C8—C7—C9—C10 angles of 101.0 (3)° and −134.3 (3)°, respectively. These indicate that the substituents attached to C9 are twisted by about 18° compared to the equivalent groups in (I)[link], although the phenyl ring and nitro group still project in roughly opposite senses with respect to the indole ring. The N2—C10—C9—C11 torsion angle of −174.4 (3)° indicates that the nitro group and phenyl ring lie in an anti orientation about the C10—C9 bond. The dihedral angle between the indole ring system and the phenyl ring is 81.69 (7)°.

[Figure 2]
Figure 2
The mol­ecular structure of (II)[link], showing 50% displacement ellipsoids.

Fig. 3[link] shows the mol­ecular structure of (III)[link]. The r.m.s. deviation for the atoms making up the indole ring system is 0.013Å, and O3, C9 and C17 deviate from the mean plane by 0.0273 (12), −0.1302 (14), and 0.148 (1)Å, respectively. The dihedral angle between the indole ring plane and the C17-ring is 53.76 (3). This is similar to the equivalent value for (I)[link], but the twist is in the opposite sense, as indicated by the C7—C8—C17—C22 torsion angle of −52.40 (15)°: in this case no intra­molecular C—H⋯O bond is present. The dihedral angle between the indole ring and the C11 ring is 67.12 (3)°. The C8—C7—C9—H9, C8—C7—C9—C11 and C8—C7—C9—C10 torsion angles are −17, 102.46 (11) and −133.20 (10)°, respectively, which are almost identical to the corresponding values for (II)[link]. These indicate that the C9—H9 bond is twisted away from the indole plane to the same side of the mol­ecule as the nitro group: looking down the C9—C7 bond, C9—H9 is rotated in a clockwise sense with respect to the ring. The disposition of N2 and C11 about the C10—C9 bond is anti [torsion angle = −171.63 (8)°]. The methyl C atom of the meth­oxy group deviates from the indole plane by −0.1302 (14) Å, i.e. slightly towards the side of the mol­ecule occupied by the C11 phenyl ring.

[Figure 3]
Figure 3
The mol­ecular structure of (III)[link], showing 50% displacement ellipsoids.

A view of the mol­ecular structure of (IV)[link] can be seen in Fig. 4[link]. The indole ring system has an r.m.s. deviation of 0.008 Å for its nine non-hydrogen atoms and Cl1, C9 and C17 deviate from the mean plane by 0.009 (1), 0.093 (1) and −0.044 (1)Å. Thus, the displacement of C9 is slightly smaller than in the other three structures presented here. In terms of the orientation of the substituents at the 3-position of the indole ring, the C8—C7—C9—H9, C8—C7—C9—C11 and C8—C7—C9—C10 torsion angles are −17, 102.42 (14) and −133.94 (12)°, respectively, which are very similar to the equivalent data for (II)[link] and (III)[link], again indicating that C9—H9 is twisted towards the nitro group. The N2—C10—C9—C11 torsion angle of 179.61 (9)° shows that the anti orientation of N2 and C11 exactly mirrors that of the equivalent atoms in (II)[link] and (III)[link].

[Figure 4]
Figure 4
The mol­ecular structure of (IV)[link], showing 50% displacement ellipsoids.

All-in-all, the conformations of (II)[link], (III)[link] and (IV)[link] are very similar, especially in terms of the orientations of the substit­uents attached to C9 with respect to the indole ring. (I)[link] differs slightly in that C9—H9 lies almost in the indole ring plane rather than being twisted away from it, which possibly correlates with the intra­molecular C—H⋯O inter­action noted above. Of course, in every case, crystal symmetry generates an equal number of mol­ecules of the opposite chirality (i.e., S configuration of C9), with an anti­clockwise twist of C9—H9 with respect to the indole ring system.

3. Supra­molecular features

As might be expected, the dominant supra­molecular motif in all these compounds involve N—H⋯O hydrogen bonds, although the resulting topologies [chains for (I)[link] and (II)[link] and dimers for (III)[link] and (IV)] are different. Various weak inter­actions also occur, as described below and listed in Tables 1[link]–4[link][link][link], respectively.

Table 2
Hydrogen-bond geometry (Å, °) for (II)[link]

Cg2 and Cg4 are the centroids of the C1–C6 ring.

D—H⋯A D—H H⋯A DA D—H⋯A
N1—H1⋯O1i 0.80 (4) 2.32 (4) 3.087 (3) 161 (4)
C12—H12⋯Cg2ii 0.95 2.75 3.500 (3) 136
Symmetry codes: (i) [x, -y+{\script{1\over 2}}, z-{\script{1\over 2}}]; (ii) [-x+1, y+{\script{1\over 2}}, -z+{\script{3\over 2}}].

Table 3
Hydrogen-bond geometry (Å, °) for (III)[link]

Cg2 and Cg4 are the centroids of the C1–C6 and C17–C22 rings, respectively.

D—H⋯A D—H H⋯A DA D—H⋯A
N1—H1⋯O1i 0.867 (14) 2.470 (14) 3.1872 (13) 140.5 (12)
C10—H10A⋯O3ii 0.99 2.56 2.9934 (14) 107
C14—H14⋯O3iii 0.95 2.51 3.4546 (14) 173
C18—H18⋯O1i 0.95 2.59 3.2877 (14) 131
C21—H21⋯Cg2iv 0.95 2.83 3.5297 (13) 131
C23—H23CCg4v 0.98 2.76 3.5781 (13) 141
Symmetry codes: (i) -x, -y+1, -z+1; (ii) -x, -y, -z+1; (iii) -x+1, -y, -z+1; (iv) -x+1, -y+1, -z+1; (v) x, y, z+1.

Table 4
Hydrogen-bond geometry (Å, °) for (IV)[link]

D—H⋯A D—H H⋯A DA D—H⋯A
N1—H1⋯O2i 0.814 (16) 2.517 (16) 3.0806 (15) 127.4 (14)
C14—H14⋯O1ii 0.95 2.60 3.1827 (17) 120
Symmetry codes: (i) -x+1, -y+1, -z+1; (ii) x, y-1, z.

In (I)[link], the N1—H1⋯O2i [(i) = [{1\over 2}] − x, y − [{1\over 2}], z] bond links the mol­ecules into [100] chains with a C(8) chain motif (Fig. 5[link]); adjacent mol­ecules are related by b-glide symmetry. A PLATON (Spek, 2009[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]) analysis of the packing in (I)[link] indicated the presence of no fewer than four C—H⋯π inter­actions, although the C10, C16 and C19 bonds must be very weak based on the long H⋯π separation. Together, these links lead to a three-dimensional network in the crystal. There are no aromatic ππ stacking inter­actions in (I)[link], as the shortest ring centroid–centroid separation is greater than 4.6 Å.

[Figure 5]
Figure 5
Partial packing diagram for (I)[link], showing the formation of [100] chains linked by N—H⋯O hydrogen bonds (double-dashed lines). Symmetry code as in Table 1[link].

The mol­ecules of (II)[link] are linked by N1—H1—O2i [(i) = x, [{1\over 2}] − y, z − [{1\over 2}]] hydrogen bonds into [001] chains (Fig. 6[link]) characterized by a C(8) motif: adjacent mol­ecules are related by c-glide symmetry. Just one C—H⋯π inter­action occurs in the crystal of (II)[link] but a ππ stacking inter­action involving inversion-related pairs of C1–C6 benzene rings is also observed: the centroid–centroid separation is 3.7122 (16) Å and the slippage is 1.69 Å. The weak links connect the chains into a three-dimensional network.

[Figure 6]
Figure 6
Partial packing diagram for (II)[link], showing the formation of [001] chains linked by N—H⋯O hydrogen bonds (double-dashed lines). Symmetry code as in Table 2[link].

In (III)[link], inversion dimers linked by N1—H1⋯O1i and N1i—H1i⋯O1 [(i) = −x, 1 − y, 1 − z] hydrogen bonds occur, which generate R22(16) loops. The dimer linkage is reinforced by a pair of C12—H12⋯O1 inter­actions (Fig. 7[link]). The dimers are linked by several C—H⋯O and C—H⋯π inter­actions, generating a three-dimensional network. The shortest ring centroid–centroid separation is over 4.7 Å.

[Figure 7]
Figure 7
An inversion dimer in the crystal of (III)[link] linked by pairs of N—H⋯O and C—H⋯O hydrogen bonds (double-dashed lines). Symmetry code as in Table 3[link].

In the crystal of (IV)[link], the mol­ecules associate into inversion dimers linked by N1—H1⋯O2i and N1i—H1i⋯O2 [(i) = 1 − x, 1 − y, 1 − z] hydrogen bonds (Fig. 8[link]). Just one weak C—H⋯O hydrogen bond connects the dimers into [010] chains. The shortest ring centroid–centroid separation is over 4.5 Å.

[Figure 8]
Figure 8
Fragment of an [010] chain in the crystal of (IV)[link] linked by N—H⋯O and C—H⋯O hydrogen bonds (double-dashed lines). Symmetry codes as in Table 4[link].

4. Database survey

There are over 4000 indole derivatives with different substituents (including H) at the 2, 3 and 5 positions of the ring system reported in the Cambridge Structural Database (CSD; Groom & Allen, 2014[Groom, C. R. & Allen, F. H. (2014). Angew. Chem. Int. Ed. 53, 662-671.]). Narrowing the survey to indole deriv­atives with a C atom bonded to the 2-position of the ring and an sp3-hybridized C atom with two further C atoms and one H atom bonded to it at the 3-position (as per C9 in the present structures) yielded 72 hits. An analysis of the dihedral angle in these structures corresponding to C8—C7—C9—H9 in the present structures showed a wide spread of values with no obvious overall pattern.

5. Synthesis and crystallization

A mixture of sodium chloride (219 mg, 3.75 mmol) and diethyl 2-([5-chloro-2-phenyl-1H-indol-3-yl]{phen­yl}meth­yl)malonate (847 mg, 1.78 mmol), [prepared from diethyl benzyl­idene­malonate and 5-chloro-2-phenyl­indole in the presence of Cu(OTf)2] in DMSO (10.8 ml) and water (150 ml) was stirred at 443K for 16 h. After cooling to room temperature, water was added until a precipitate formed (25 ml). The mixture was extracted into DCM (3 × 25 ml), washed with saturated NaCl(aq) (15 ml), dried over sodium sulfate, filtered and evaporated to leave a red oil. Flash chromatography (1:1 DCM, hexa­nes) afforded (I)[link] as a colourless solid (638 mg, 89%), m.p. 464K. Colourless blocks were recrystallized from methanol solution at room temperature. IR (Nujol, cm−1) 3391, 2911, 1738, 1629, 1581, 1556, 1445, 1399, 1283, 1271, 1215, 1208, 1145, 1113, 1077, 874, 852,761. HRMS (ESI) for C25H2335ClNO2 [M + H]+ calculated 404.1418, found 404.1416.

A mixture of indole (1.069 g, 9.13 mmol), trans-β-nitro­styrene (1.372 g, 9.20 mmol) and sulfamic acid (178 mg, 1.83 mmol) were refluxed in EtOH (45 ml) for 24 h. Removal of the solvent and flash chromatography (1:3 diethyl ether, hexa­nes) afforded 3-(2-nitro-1-phenyl­eth­yl)-1H-indole as a colourless solid (2.020 g, 83%). This was refluxed in ClCl4 (40 ml) with NBS (1.505 g, 8.46 mmol) for 96 h, filtered and the solvent evaporated under reduced pressure to leave a red oily residue. Flash chromatography of the residue (1:5 EtOAc, hexa­nes) gave (II)[link] as a peach-coloured solid (1.386 g, 53%). Pale-brown plates were recrystallized from methanol solution at room temperature; m.p. 436K; IR (KBr, cm−1) 3353, 2987, 2923, 2856, 1548, 1452, 1337, 740 and 701; RMS (ESI) for C16H1379BrN2O2Na [M + Na]+ calculated 367.0058, found 367.0049.

A mixture of trans-β-nitro­styrene (167 mg, 1.12 mmol), sulfamic acid (22 mg, 0.22 mmol) and 5-meth­oxy-2-phenyl-1H-indole (250 mg, 1.12 mmol), prepared from p-meth­oxy­phenyl­hydrazine hydro­chloride, aceto­phenone and PPA in EtOH (5 ml) was stirred at 323K for 40 h. The solvent was removed under reduced pressure and the residue was flash chromatographed (1:5 EtOAc, hexa­nes) to provide (III)[link] as an orange solid (210 mg, 50%): Light-yellow blocks were recrystallized from methanol solution at room temperature; m.p. 434–436K; IR (KBr, cm−1) 3407, 1629, 1600, 1581, 1534, 1369, 1200 and 1141; HRMS (ESI) for C23H21N2O3 [M + H]+ calculated 373.1553, found 373.1544.

5-Chloro-2-phenyl-1H-indole (1.286 g, 5.65 mmol), trans-β-nitro­styrene (843 mg, 5.65 mmol) and sulfamic acid (110 mg, 1.13 mmol) were stirred in EtOH (80 ml) at reflux for 15 h. The solvent was removed under reduced pressure and the crude product was purified by flash chromatography (1:4 EtOAc, hexa­nes then 1:2 EtOAc, hexa­nes) to give the product as a yellow solid (1.105 g, 52%). Rf 0.23 (1:4 EtOAc, hexa­nes); m.p. 457–459K; IR (KBr, cm−1) 3396, 3034, 1740, 1598, 1510, 1318, 1055 and 839; HRMS (ESI) for C22H18N2O2Cl [M + H]+ calculated 377.1057, found 377.1054.

6. Refinement

Crystal data, data collection and structure refinement details are summarized in Table 5[link]. The N-bound H atoms were located in difference maps and their positions freely refined. The C-bound H atoms were geometrically placed (C—H = 0.93–0.98 Å) and refined as riding atoms. The constraint Uiso(H) = 1.2Ueq(carrier) or 1.5Ueq(methyl carrier) was applied in all cases. The methyl H atoms (if any) were allowed to rotate, but not to tip, to best fit the electron density.

Table 5
Experimental details

  (I) (II) (III) (IV)
Crystal data
Chemical formula C25H22ClNO2 C16H13BrN2O2 C23H20N2O3 C22H17ClN2O2
Mr 403.89 345.19 372.41 376.83
Crystal system, space group Orthorhombic, Pbcn Monoclinic, P21/c Triclinic, P[\overline{1}] Triclinic, P[\overline{1}]
Temperature (K) 100 100 100 100
a, b, c (Å) 10.1558 (7), 12.1446 (9), 33.605 (2) 9.7223 (7), 10.2804 (7), 13.9652 (10) 9.7561 (7), 10.0258 (7), 10.8942 (8) 9.5830 (7), 9.7555 (7), 10.2307 (7)
α, β, γ (°) 90, 90, 90 90, 91.238 (2), 90 116.415 (5), 91.843 (4), 97.963 (4) 79.546 (6), 77.966 (6), 87.455 (7)
V3) 4144.8 (5) 1395.48 (17) 939.84 (12) 919.87 (11)
Z 8 4 2 2
Radiation type Mo Kα Mo Kα Mo Kα Mo Kα
μ (mm−1) 0.21 2.95 0.09 0.23
Crystal size (mm) 0.22 × 0.19 × 0.07 0.22 × 0.19 × 0.05 0.24 × 0.21 × 0.03 0.48 × 0.36 × 0.16
 
Data collection
Diffractometer Rigaku Mercury CCD Rigaku Mercury CCD Rigaku Mercury CCD Rigaku Mercury CCD
Absorption correction Multi-scan (SADABS; Sheldrick, 1996[Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.]) Multi-scan (SADABS; Sheldrick, 1996[Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.])
Tmin, Tmax 0.563, 0.867 0.899, 0.965
No. of measured, independent and observed [I > 2σ(I)] reflections 27690, 4720, 3714 14919, 3213, 2911 12625, 4305, 3782 13253, 4138, 3363
Rint 0.079 0.042 0.028 0.023
(sin θ/λ)max−1) 0.648 0.650 0.650 0.649
 
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.053, 0.153, 1.05 0.040, 0.108, 1.07 0.035, 0.097, 1.06 0.031, 0.085, 1.06
No. of reflections 4720 3213 4305 4138
No. of parameters 266 193 257 247
H-atom treatment H atoms treated by a mixture of independent and constrained refinement H atoms treated by a mixture of independent and constrained refinement H atoms treated by a mixture of independent and constrained refinement H atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å−3) 0.54, −0.25 1.26, −0.83 0.30, −0.22 0.27, −0.23
Computer programs: CrystalClear (Rigaku, 2012[Rigaku (2012). CrystalClear. Rigaku Corporation, Tokyo, Japan.]), SHELXS97 and SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]), ORTEP-3 for Windows (Farrugia, 2012[Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.]) and publCIF (Westrip, 2010[Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.]).

Supporting information


Chemical context top

The indole ring system is an important element of many natural and synthetic molecules with important biological activities (Biswal et al., 2012; Kaushik et al., 2013; Sharma et al., 2010). As part of our ongoing studies in this area, a group of indole derivatives with different substituents at the 2, 3 and 5-positions of the ring system were synthesised and tested as possible cannabinoid allosteric antagonists (Kerr, 2013). These compounds are analogues of 3-(2-nitro-1-phenyl­ethyl)-2-phenyl-1H-indole (known as F087; see scheme), a positive allosteric modulator of CB1 (Adam et al., 2007).

We now report the crystal structures of four of the compounds from that study, viz. ethyl 3-(5-chloro-2-phenyl-1H-indol-3-yl)-3-phenyl­propano­ate, (I), 2-bromo-3-(2-nitro-1-phenyl­ethyl)-1H-indole, (II), 5-meth­oxy-3-(2-nitro-1-phenyl­ethyl)-2-phenyl-1H-indole, (III), and 5-chloro-3-(2-nitro-1-phenyl­ethyl)-2-phenyl-1H-indole, (IV). Compounds (III) and (IV) were found to act as moderate enhancers of CB1 signalling at 1 µM concentration (Kerr, 2013) but compounds (I) and (II) were inactive.

Structural commentary top

Each compound crystallizes in a centrosymmetric space group [Pbcn for (I), P21/c for (II) and P1 for (III) and (IV)] with one molecule in the asymmetric unit: in each structure, the stereogenic carbon atom (C9) was assigned an arbitrary R configuration. All the bond lengths and angles in these compounds lie within their expected ranges and full details are available in the CIF.

The molecular structure of (I) is illustrated in Fig. 1. The deviations of atoms Cl1, C9 and C20 from the mean plane (r.m.s. deviation = 0.033 Å) of the indole ring system are 0.0293 (17), -0.156 (2) and -0.008 (2) Å, respectively. The larger deviation for C9 may arise from the steric crowding around it. The dihedral angle between the indole ring system and the C20-phenyl ring is 54.07 (4)° and the C7—C8—C20—C21 torsion angle is 53.7 (3)°. This twisting facilitates the formation of an intra­molecular C—H···O inter­action (Table 1), which generates an S(9) ring. Atom H9 is close to eclipsed with C8 (C8—C7—C9—H9 = 2°) and the C14 phenyl ring and the C10-bonded ester groups project to opposite sides of the indole ring, as qu­anti­fied by the C8—C7—C9—C14 and C8—C7—C9—C10 torsion angles of 119.22 (17) and –115.32 (18)°, respectively. Looking down the C9—C7 bond with C8 facing upwards, the C14-phenyl group lies to the left of the indole ring system and the ester group to the right. With respect to the C9—C10 bond, atoms C11 and C14 have an anti disposition [C14—C9—C10—C11 = 175.39 (13)°]. The C11—O1—C12—C13 torsion angle is –81.27 (19)° and the dihedral angle between the indole ring system and the C14 phenyl ring is 86.55 (4)°.

The molecular structure of (II) is shown in Fig. 2. Atoms Br1 and C9 deviate from the mean plane of the indole ring system (r.m.s. deviation = 0.011 Å) by 0.073 (3) and 0.134 (4) Å, respectively. Again, the larger deviation of C9 can be ascribed to steric crowding. The substituents bonded to the 3-position of the ring in (II) are characterized by the C8—C7—C9—H9 torsion angle of –15° and the corresponding C8—C7—C9—C11 and C8—C7—C9—C10 angles of 101.0 (3)° and -134.3 (3)°, respectively. These indicate that the substituents attached to C9 are twisted by about 18° compared to the equivalent groups in (I), although the phenyl ring and nitro group still project in roughly opposite senses with respect to the indole ring. The N2—C10—C9—C11 torsion angle of –174.4 (3)° indicates that the nitro group and phenyl ring lie in an anti orientation about the C10—C9 bond. The dihedral angle between the indole ring system and the phenyl ring is 81.69 (7)°.

Fig. 3 shows the molecular structure of (III). The r.m.s. deviation for the atoms making up the indole ring system is 0.013Å, and O3, C9 and C17 deviate from the mean plane by 0.0273 (12), –0.1302 (14), and 0.148 (1)Å, respectively. The dihedral angle between the indole ring plane and the C17-ring is 53.76 (3). This is similar to the equivalent value for (I), but the twist is in the opposite sense, as indicated by the C7—C8—C17—C22 torsion angle of –52.40 (15)°: in this case no intra­molecular C—H···O bond is present. The dihedral angle between the indole ring and the C11 ring is 67.12 (3)°. The C8—C7—C9—H9, C8—C7—C9—C11 and C8—C7—C9—C10 torsion angles are –17, 102.46 (11) and –133.20 (10)°, respectively, which are almost identical to the corresponding values for (II). These indicate that the C9—H9 bond is twisted away from the indole plane to the same side of the molecule as the nitro group: looking down the C9—C7 bond, C9—H9 is rotated in a clockwise sense with respect to the ring. The disposition of N2 and C11 about the C10—C9 bond is anti [torsion angle = –171.63 (8)°]. The methyl C atom of the meth­oxy group deviates from the indole plane by –0.1302 (14) Å, i.e. slightly towards the side of the molecule occupied by the C11 phenyl ring.

A view of the molecular structure of (IV) can be seen in Fig. 4. The indole ring system has an r.m.s. deviation of 0.008 Å for its nine non-hydrogen atoms and Cl1, C9 and C17 deviate from the mean plane by 0.009 (1), 0.093 (1) and -0.044 (1)Å. Thus, the displacement of C9 is slightly smaller than in the other three structures presented here. In terms of the orientation of the substituents at the 3-position of the indole ring, the C8—C7—C9—H9, C8—C7—C9—C11 and C8—C7—C9—C10 torsion angles are –17, 102.42 (14) and –133.94 (12)°, respectively, which are very similar to the equivalent data for (II) and (III), again indicating that C9—H9 is twisted towards the nitro group. The N2—C10—C9—C11 torsion angle of 179.61 (9)° shows that the anti orientation of N2 and C11 exactly mirrors that of the equivalent atoms in (II) and (III).

All-in-all, the conformations of (II), (III) and (IV) are very similar, especially in terms of the orientations of the substituents attached to C9 with respect to the indole ring. (I) differs slightly in that C9—H9 lies almost in the indole ring plane rather than being twisted away from it, which possibly correlates with the intra­molecular C—H···O inter­action noted above. Of course, in every case, crystal symmetry generates an equal number of molecules of the opposite chirality (i.e., S configuration of C9), with an anti­clockwise twist of C9—H9 with respect to the indole ring system.

Supra­molecular features top

As might be expected, the dominant supra­molecular motif in all these compounds involve N—H···O hydrogen bonds, although the resulting topologies [chains for (I) and (II) and dimers for (III) and (IV)] are different. Various weak inter­actions also occur, as described below and listed in Tables 1–4, respectively.

In (I), the N1—H1···O2i (i = 1/2 - x, y - 1/2, z) bond links the molecules into [100] chains with a C(8) chain motif (Fig. 5); adjacent molecules are related by b-glide symmetry. A PLATON (Spek, 2009) analysis of the packing in (I) indicated the presence of no fewer than four C—H···π inter­actions, although the C10, C16 and C19 bonds must be very weak based on the long H···π separation. Together, these links lead to a three-dimensional network in the crystal. There are no aromatic ππ stacking inter­actions in (I), as the shortest ring centroid–centroid separation is greater than 4.6 Å.

The molecules of (II) are linked by N1—H1—O2i (i = x, 1/2 - y, z - 1/2) hydrogen bonds into [001] chains (Fig. 6) characterized by a C(8) motif: adjacent molecules are related by c-glide symmetry. Just one C—H···π inter­action occurs in the crystal of (II) but a ππ stacking inter­action involving inversion-related pairs of C1–C6 benzene rings is also observed: the centroid–centroid separation is 3.7122 (16) Å and the slippage is 1.69 Å. The weak links connect the chains into a three-dimensional network.

In (III), inversion dimers linked by N1—H1···O1i and N1i—H1i···O1 (i = -x, 1 - y, 1 - z) hydrogen bonds occur, which generate R22(16) loops. The dimer linkage is reinforced by a pair of C12—H12···O1 inter­actions (Fig. 7). The dimers are linked by several C—H···O and C—H···π inter­actions, generating a three-dimensional network. The shortest ring centroid–centroid separation is over 4.7 Å.

In the crystal of (IV), the molecules associate into inversion dimers linked by N1—H1···O2i and N1i—H1i···O2 (i = 1 - x, 1 - y, 1 - z) hydrogen bonds. Just one weak C—H···O hydrogen bond connects the dimers into [010] chains. The shortest ring centroid–centroid separation is over 4.5 Å.

Database survey top

There are over 4000 indole derivatives with different substituents (including H) at the 2, 3 and 5 positions of the ring system reported in the Cambridge Structural Database (CSD; Groom & Allen, 2014). Narrowing the survey to indole derivatives with a C atom bonded to the 2-position of the ring and an sp3-hybridized C atom with two further C atoms and one H atom bonded to it at the 3-position (as per C9 in the present structures) yielded 72 hits. An analysis of the dihedral angle in these structures corresponding to C8—C7—C9—H9 in the present structures showed a wide spread of values with no obvious overall pattern.

Synthesis and crystallization top

A mixture of sodium chloride (219 mg, 3.75 mmol) and di­ethyl 2-([5-chloro-2-phenyl-1H-indol-3-yl]{phenyl}­methyl)­malonate (847 mg, 1.78 mmol), [prepared from di­ethyl benzyl­idenemalonate and 5-chloro-2-phenyl­indole in the presence of Cu(OTf)2] in DMSO (10.8 ml) and water (150 ml) was stirred at 443K for 16 h. After cooling to room temperature, water was added until a precipitate formed (25 ml). The mixture was extracted into DCM (3 × 25 ml), washed with saturated NaCl(aq) (15 ml), dried over sodium sulfate, filtered and evaporated to leave a red oil. Flash chromatography (1:1 DCM, hexanes) afforded (I) as a colourless solid (638 mg, 89%), m.p. 464K. Colourless blocks were recrystallized from methanol solution at room temperature. IR (Nujol, cm-1) 3391, 2911, 1738, 1629, 1581, 1556, 1445, 1399, 1283, 1271, 1215, 1208, 1145, 1113, 1077, 874, 852,761. HRMS (ESI) for C25H2335ClNO2 [M + H]+ calculated 404.1418, found 404.1416.

A mixture of indole (1.069 g, 9.13 mmol), trans-β-nitro­styrene (1.372 g, 9.20 mmol) and sulfamic acid (178 mg, 1.83 mmol) were refluxed in EtOH (45 ml) for 24 h. Removal of the solvent and flash chromatography (1:3 di­ethyl ether, hexanes) afforded 3-(2-nitro-1-phenyl­ethyl)-1H-indole as a colourless solid (2.020 g, 83%). This was refluxed in ClCl4 (40 ml) with NBS (1.505 g, 8.46 mmol) for 96 h, filtered and the solvent evaporated under reduced pressure to leave a red oily residue. Flash chromatography of the residue (1:5 EtOAc, hexanes) gave (II) as a peach-coloured solid (1.386 g, 53%). Pale-brown plates were recrystallized from methanol solution at room temperature; m.p. 436K; IR (KBr, cm-1) 3353, 2987, 2923, 2856, 1548, 1452, 1337, 740 and 701; RMS (ESI) for C16H1379BrN2O2Na [M + Na]+ calculated 367.0058, found 367.0049.

A mixture of trans-β-nitro­styrene (167 mg, 1.12 mmol), sulfamic acid (22 mg, 0.22 mmol) and 5-meth­oxy-2-phenyl-1H-indole (250 mg, 1.12 mmol), prepared from p-meth­oxy­phenyl­hydrazine hydro­chloride, aceto­phenone and PPA ) in EtOH (5 ml) was stirred at 323K for 40 h. The solvent was removed under reduced pressure and the residue was flash chromatographed (1:5 EtOAc, hexanes) to provide (III) as an orange solid (210 mg, 50%): Light-yellow blocks were recrystallized from methanol solution at room temperature; m.p. 434–436K; IR (KBr, cm-1) 3407, 1629, 1600, 1581, 1534, 1369, 1200 and 1141; HRMS (ESI) for C23H21N2O3 [M + H]+ calculated 373.1553, found 373.1544.

5-Chloro-2-phenyl-1H-indole (1.286 g, 5.65 mmol), trans-β-nitro­styrene (843 mg, 5.65 mmol) and sulfamic acid (110 mg, 1.13 mmol) were stirred in EtOH (80 ml) at reflux for 15 h. The solvent was removed under reduced pressure and the crude product was purified by flash chromatography (1:4 EtOAc, hexanes then 1:2 EtOAc, hexanes) to give the product as a yellow solid (1.105 g, 52%). Rf 0.23 (1:4 EtOAc, hexanes); m.p. 457–459K; IR (KBr, cm-1) 3396, 3034, 1740, 1598, 1510, 1318, 1055 and 839; HRMS (ESI) for C22H18N2O2Cl [M + H]+ calculated 377.1057, found 377.1054.

Refinement top

Crystal data, data collection and structure refinement details are summarized in Table 5. The N-bound H atoms were located in difference maps and their positions freely refined. The C-bound H atoms were geometrically placed (C—H = 0.93–0.98 Å) and refined as riding atoms. The constraint Uiso(H) = 1.2Ueq(carrier) or 1.5Ueq(methyl carrier) was applied in all cases. The methyl H atoms (if any) were allowed to rotate, but not to tip, to best fit the electron density.

Related literature top

For related literature, see: Adam et al. (2007); Groom & Allen (2014); Biswal et al. (2012); Kaushik et al. (2013); Kerr (2013); Sharma et al. (2010); Spek (2009).

Computing details top

For all compounds, data collection: CrystalClear (Rigaku, 2012); cell refinement: CrystalClear (Rigaku, 2012); data reduction: CrystalClear (Rigaku, 2012); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: publCIF (Westrip, 2010).

Figures top
[Figure 1] Fig. 1. The molecular structure of (I), showing 50% displacement ellipsoids. The double-dashed line indicates a weak C—H···O hydrogen bond.
[Figure 2] Fig. 2. The molecular structure of (II), showing 50% displacement ellipsoids.
[Figure 3] Fig. 3. The molecular structure of (III), showing 50% displacement ellipsoids.
[Figure 4] Fig. 4. The molecular structure of (IV), showing 50% displacement ellipsoids.
[Figure 5] Fig. 5. Partial packing diagram for (I), showing the formation of [100] chains linked by N—H···O hydrogen bonds (double-dashed lines). Symmetry code as in Table 1.
[Figure 6] Fig. 6. Partial packing diagram for (II), showing the formation of [001] chains linked by N—H···O hydrogen bonds (double-dashed lines). Symmetry code as in Table 2.
[Figure 7] Fig. 7. An inversion dimer in the crystal of (III) linked by pairs of N—H···O and C—H···O hydrogen bonds (double-dashed lines). Symmetry code as in Table 3.
[Figure 8] Fig. 8. Fragment of an [010] chain in the crystal of (IV) linked by N—H···O and C—H···O hydrogen bonds (double-dashed lines). Symmetry codes as in Table 4.
(I) Ethyl 3-(5-chloro-2-phenyl-1H-indol-3-yl)-3-phenylpropanoate top
Crystal data top
C25H22ClNO2F(000) = 1696
Mr = 403.89Dx = 1.294 Mg m3
Orthorhombic, PbcnMo Kα radiation, λ = 0.71075 Å
Hall symbol: -P 2n 2abθ = 2.6–27.5°
a = 10.1558 (7) ŵ = 0.21 mm1
b = 12.1446 (9) ÅT = 100 K
c = 33.605 (2) ÅBlock, colourless
V = 4144.8 (5) Å30.22 × 0.19 × 0.07 mm
Z = 8
Data collection top
Rigaku Mercury CCD
diffractometer
3714 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tubeRint = 0.079
Graphite monochromatorθmax = 27.4°, θmin = 2.6°
ω scansh = 1013
27690 measured reflectionsk = 1515
4720 independent reflectionsl = 2743
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.053Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.153H atoms treated by a mixture of independent and constrained refinement
S = 1.05 w = 1/[σ2(Fo2) + (0.0961P)2 + 0.2647P]
where P = (Fo2 + 2Fc2)/3
4720 reflections(Δ/σ)max < 0.001
266 parametersΔρmax = 0.54 e Å3
0 restraintsΔρmin = 0.24 e Å3
Crystal data top
C25H22ClNO2V = 4144.8 (5) Å3
Mr = 403.89Z = 8
Orthorhombic, PbcnMo Kα radiation
a = 10.1558 (7) ŵ = 0.21 mm1
b = 12.1446 (9) ÅT = 100 K
c = 33.605 (2) Å0.22 × 0.19 × 0.07 mm
Data collection top
Rigaku Mercury CCD
diffractometer
3714 reflections with I > 2σ(I)
27690 measured reflectionsRint = 0.079
4720 independent reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0530 restraints
wR(F2) = 0.153H atoms treated by a mixture of independent and constrained refinement
S = 1.05Δρmax = 0.54 e Å3
4720 reflectionsΔρmin = 0.24 e Å3
266 parameters
Special details top

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.

Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
C10.54948 (15)0.29890 (13)0.09779 (5)0.0311 (4)
C20.61955 (17)0.22877 (13)0.07259 (5)0.0348 (4)
H20.58610.16030.06540.042*
C30.73983 (18)0.26430 (14)0.05867 (5)0.0347 (4)
H30.78830.22010.04150.042*
C40.78952 (16)0.36789 (14)0.07051 (5)0.0326 (4)
C50.72080 (16)0.43914 (13)0.09457 (5)0.0302 (4)
H50.75570.50720.10160.036*
C60.59588 (16)0.40567 (12)0.10815 (5)0.0290 (3)
C70.49436 (15)0.45698 (12)0.13159 (5)0.0281 (3)
C80.39449 (16)0.38103 (13)0.13567 (5)0.0297 (3)
C90.49669 (15)0.57406 (12)0.14740 (5)0.0279 (3)
H90.41440.58600.16200.033*
C100.50018 (16)0.65784 (13)0.11262 (5)0.0313 (4)
H10A0.48790.73160.12310.038*
H10B0.58570.65500.09980.038*
C110.39491 (17)0.63402 (13)0.08240 (5)0.0318 (4)
C120.3469 (2)0.55713 (18)0.01910 (6)0.0457 (5)
H12A0.38830.55510.00690.055*
H12B0.27620.61080.01820.055*
C130.2900 (2)0.44405 (18)0.02866 (7)0.0514 (5)
H13A0.22380.42570.00940.077*
H13B0.25150.44520.05470.077*
H13C0.35900.39000.02780.077*
C140.61049 (16)0.59166 (12)0.17675 (5)0.0293 (4)
C150.62031 (17)0.52108 (14)0.20950 (5)0.0354 (4)
H150.55870.46510.21260.042*
C160.72023 (18)0.53266 (16)0.23754 (6)0.0408 (4)
H160.72530.48480.25910.049*
C170.81262 (18)0.61658 (16)0.23304 (6)0.0415 (4)
H170.87960.62500.25170.050*
C180.80455 (18)0.68715 (15)0.20092 (6)0.0403 (4)
H180.86640.74300.19800.048*
C190.70415 (17)0.67531 (14)0.17278 (5)0.0350 (4)
H190.69960.72340.15130.042*
C200.26765 (16)0.38379 (13)0.15729 (5)0.0312 (4)
C210.17591 (17)0.46826 (14)0.15152 (5)0.0355 (4)
H210.19540.52570.13420.043*
C220.05587 (17)0.46706 (15)0.17144 (6)0.0386 (4)
H220.00450.52340.16720.046*
C230.02557 (18)0.38227 (15)0.19767 (5)0.0368 (4)
H230.05480.38170.21090.044*
C240.11659 (17)0.29816 (14)0.20392 (5)0.0363 (4)
H240.09730.24160.22160.044*
C250.23610 (17)0.29836 (14)0.18378 (5)0.0339 (4)
H250.29570.24140.18790.041*
N10.42951 (14)0.28435 (11)0.11609 (5)0.0324 (3)
H10.3687 (19)0.2319 (17)0.1108 (6)0.039*
O10.44406 (12)0.59120 (10)0.04889 (4)0.0357 (3)
O20.27802 (12)0.65045 (10)0.08742 (4)0.0367 (3)
Cl10.94493 (4)0.40680 (4)0.052348 (14)0.04005 (16)
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
C10.0296 (8)0.0234 (7)0.0403 (9)0.0003 (6)0.0034 (7)0.0012 (6)
C20.0384 (9)0.0222 (7)0.0438 (9)0.0028 (7)0.0050 (7)0.0056 (7)
C30.0378 (9)0.0279 (8)0.0384 (9)0.0066 (7)0.0033 (7)0.0055 (7)
C40.0291 (8)0.0288 (8)0.0400 (9)0.0027 (7)0.0020 (7)0.0033 (7)
C50.0322 (9)0.0218 (7)0.0368 (9)0.0001 (6)0.0032 (7)0.0004 (6)
C60.0305 (8)0.0203 (7)0.0362 (9)0.0024 (6)0.0034 (7)0.0002 (6)
C70.0284 (8)0.0205 (7)0.0353 (8)0.0014 (6)0.0024 (6)0.0001 (6)
C80.0305 (8)0.0214 (7)0.0371 (8)0.0015 (6)0.0038 (7)0.0013 (6)
C90.0282 (8)0.0193 (7)0.0361 (9)0.0007 (6)0.0006 (6)0.0003 (6)
C100.0333 (9)0.0211 (7)0.0393 (9)0.0001 (6)0.0021 (7)0.0021 (6)
C110.0368 (9)0.0208 (7)0.0378 (9)0.0050 (7)0.0013 (7)0.0033 (6)
C120.0416 (10)0.0577 (12)0.0379 (10)0.0153 (9)0.0057 (8)0.0072 (8)
C130.0528 (12)0.0515 (12)0.0500 (12)0.0075 (10)0.0030 (9)0.0182 (9)
C140.0277 (8)0.0225 (7)0.0377 (9)0.0033 (6)0.0010 (7)0.0047 (6)
C150.0336 (9)0.0286 (8)0.0439 (10)0.0017 (7)0.0009 (7)0.0007 (7)
C160.0403 (10)0.0397 (10)0.0423 (10)0.0072 (8)0.0026 (8)0.0012 (8)
C170.0316 (9)0.0462 (11)0.0466 (11)0.0064 (8)0.0068 (8)0.0120 (8)
C180.0313 (9)0.0345 (9)0.0551 (11)0.0032 (7)0.0005 (8)0.0108 (8)
C190.0352 (9)0.0257 (8)0.0441 (10)0.0017 (7)0.0003 (7)0.0033 (7)
C200.0303 (8)0.0251 (8)0.0382 (9)0.0029 (6)0.0030 (7)0.0034 (6)
C210.0337 (9)0.0290 (8)0.0439 (10)0.0004 (7)0.0009 (7)0.0020 (7)
C220.0347 (9)0.0342 (9)0.0468 (10)0.0034 (7)0.0016 (7)0.0022 (8)
C230.0316 (8)0.0375 (9)0.0414 (9)0.0049 (7)0.0034 (7)0.0071 (7)
C240.0414 (10)0.0283 (8)0.0392 (9)0.0064 (7)0.0024 (7)0.0013 (7)
C250.0354 (9)0.0245 (8)0.0419 (9)0.0013 (7)0.0002 (7)0.0026 (7)
N10.0301 (7)0.0215 (6)0.0456 (8)0.0030 (6)0.0016 (6)0.0043 (6)
O10.0335 (7)0.0377 (7)0.0359 (7)0.0078 (5)0.0000 (5)0.0013 (5)
O20.0353 (7)0.0326 (6)0.0422 (7)0.0083 (5)0.0009 (5)0.0009 (5)
Cl10.0337 (3)0.0348 (3)0.0517 (3)0.00319 (17)0.00755 (18)0.00006 (18)
Geometric parameters (Å, º) top
C1—N11.376 (2)C12—H12B0.9700
C1—C21.396 (2)C13—H13A0.9600
C1—C61.423 (2)C13—H13B0.9600
C2—C31.377 (3)C13—H13C0.9600
C2—H20.9300C14—C191.398 (2)
C3—C41.413 (2)C14—C151.398 (2)
C3—H30.9300C15—C161.392 (3)
C4—C51.375 (2)C15—H150.9300
C4—Cl11.7569 (18)C16—C171.394 (3)
C5—C61.408 (2)C16—H160.9300
C5—H50.9300C17—C181.381 (3)
C6—C71.439 (2)C17—H170.9300
C7—C81.378 (2)C18—C191.398 (3)
C7—C91.518 (2)C18—H180.9300
C8—N11.392 (2)C19—H190.9300
C8—C201.479 (2)C20—C211.399 (2)
C9—C141.535 (2)C20—C251.404 (2)
C9—C101.550 (2)C21—C221.391 (2)
C9—H90.9800C21—H210.9300
C10—C111.503 (2)C22—C231.390 (3)
C10—H10A0.9700C22—H220.9300
C10—H10B0.9700C23—C241.393 (3)
C11—O21.216 (2)C23—H230.9300
C11—O11.337 (2)C24—C251.390 (2)
C12—O11.465 (2)C24—H240.9300
C12—C131.524 (3)C25—H250.9300
C12—H12A0.9700N1—H10.91 (2)
N1—C1—C2130.09 (15)C12—C13—H13B109.5
N1—C1—C6107.52 (14)H13A—C13—H13B109.5
C2—C1—C6122.38 (16)C12—C13—H13C109.5
C3—C2—C1117.83 (15)H13A—C13—H13C109.5
C3—C2—H2121.1H13B—C13—H13C109.5
C1—C2—H2121.1C19—C14—C15118.16 (16)
C2—C3—C4120.02 (16)C19—C14—C9123.52 (15)
C2—C3—H3120.0C15—C14—C9118.31 (14)
C4—C3—H3120.0C16—C15—C14121.52 (17)
C5—C4—C3123.02 (16)C16—C15—H15119.2
C5—C4—Cl1119.41 (13)C14—C15—H15119.2
C3—C4—Cl1117.56 (13)C15—C16—C17119.43 (17)
C4—C5—C6117.79 (15)C15—C16—H16120.3
C4—C5—H5121.1C17—C16—H16120.3
C6—C5—H5121.1C18—C17—C16119.92 (17)
C5—C6—C1118.83 (15)C18—C17—H17120.0
C5—C6—C7134.25 (14)C16—C17—H17120.0
C1—C6—C7106.92 (14)C17—C18—C19120.54 (17)
C8—C7—C6106.98 (14)C17—C18—H18119.7
C8—C7—C9127.13 (14)C19—C18—H18119.7
C6—C7—C9125.86 (14)C18—C19—C14120.43 (17)
C7—C8—N1109.24 (14)C18—C19—H19119.8
C7—C8—C20132.44 (15)C14—C19—H19119.8
N1—C8—C20118.27 (14)C21—C20—C25118.54 (16)
C7—C9—C14111.54 (12)C21—C20—C8121.89 (15)
C7—C9—C10110.58 (13)C25—C20—C8119.56 (15)
C14—C9—C10112.09 (13)C22—C21—C20120.60 (17)
C7—C9—H9107.5C22—C21—H21119.7
C14—C9—H9107.5C20—C21—H21119.7
C10—C9—H9107.5C23—C22—C21120.47 (17)
C11—C10—C9111.53 (13)C23—C22—H22119.8
C11—C10—H10A109.3C21—C22—H22119.8
C9—C10—H10A109.3C22—C23—C24119.46 (17)
C11—C10—H10B109.3C22—C23—H23120.3
C9—C10—H10B109.3C24—C23—H23120.3
H10A—C10—H10B108.0C25—C24—C23120.31 (16)
O2—C11—O1123.06 (16)C25—C24—H24119.8
O2—C11—C10124.70 (16)C23—C24—H24119.8
O1—C11—C10112.24 (14)C24—C25—C20120.62 (16)
O1—C12—C13111.45 (16)C24—C25—H25119.7
O1—C12—H12A109.3C20—C25—H25119.7
C13—C12—H12A109.3C1—N1—C8109.21 (13)
O1—C12—H12B109.3C1—N1—H1127.3 (13)
C13—C12—H12B109.3C8—N1—H1120.8 (13)
H12A—C12—H12B108.0C11—O1—C12115.72 (14)
C12—C13—H13A109.5
N1—C1—C2—C3179.31 (17)C10—C9—C14—C191.3 (2)
C6—C1—C2—C32.3 (3)C7—C9—C14—C1554.82 (19)
C1—C2—C3—C41.1 (3)C10—C9—C14—C15179.43 (14)
C2—C3—C4—C52.6 (3)C19—C14—C15—C160.2 (2)
C2—C3—C4—Cl1178.83 (13)C9—C14—C15—C16179.44 (15)
C3—C4—C5—C60.7 (3)C14—C15—C16—C170.2 (3)
Cl1—C4—C5—C6179.22 (12)C15—C16—C17—C180.1 (3)
C4—C5—C6—C12.6 (2)C16—C17—C18—C190.1 (3)
C4—C5—C6—C7176.81 (18)C17—C18—C19—C140.1 (3)
N1—C1—C6—C5177.11 (14)C15—C14—C19—C180.1 (2)
C2—C1—C6—C54.2 (2)C9—C14—C19—C18179.36 (15)
N1—C1—C6—C73.36 (18)C7—C8—C20—C2153.7 (3)
C2—C1—C6—C7175.36 (16)N1—C8—C20—C21129.19 (18)
C5—C6—C7—C8178.78 (18)C7—C8—C20—C25127.7 (2)
C1—C6—C7—C81.79 (18)N1—C8—C20—C2549.4 (2)
C5—C6—C7—C93.1 (3)C25—C20—C21—C220.4 (3)
C1—C6—C7—C9176.37 (15)C8—C20—C21—C22178.19 (16)
C6—C7—C8—N10.44 (18)C20—C21—C22—C230.5 (3)
C9—C7—C8—N1178.56 (15)C21—C22—C23—C240.0 (3)
C6—C7—C8—C20177.73 (17)C22—C23—C24—C250.7 (3)
C9—C7—C8—C204.1 (3)C23—C24—C25—C200.8 (3)
C8—C7—C9—C14119.22 (17)C21—C20—C25—C240.3 (2)
C6—C7—C9—C1463.0 (2)C8—C20—C25—C24178.90 (15)
C8—C7—C9—C10115.32 (18)C2—C1—N1—C8174.90 (18)
C6—C7—C9—C1062.5 (2)C6—C1—N1—C83.69 (19)
C7—C9—C10—C1150.25 (17)C7—C8—N1—C12.61 (19)
C14—C9—C10—C11175.39 (13)C20—C8—N1—C1179.66 (14)
C9—C10—C11—O272.6 (2)O2—C11—O1—C124.3 (2)
C9—C10—C11—O1106.83 (15)C10—C11—O1—C12175.18 (14)
C7—C9—C14—C19125.93 (16)C13—C12—O1—C1181.27 (19)
Hydrogen-bond geometry (Å, º) top
Cg2 and Cg4 are the centroids of the C1–C6 and C20–C25 rings, respectively.
D—H···AD—HH···AD···AD—H···A
C21—H21···O20.932.343.258 (2)169
N1—H1···O2i0.91 (2)1.95 (2)2.8310 (18)163.0 (18)
C10—H10A···Cg4ii0.972.933.8022 (18)150
C12—H12A···Cg2iii0.972.973.702 (2)133
C16—H16···Cg4iv0.932.783.643 (2)154
C19—H19···Cg2i0.932.963.7860 (18)149
Symmetry codes: (i) x+1/2, y1/2, z; (ii) x1/2, y1/2, z; (iii) x+1, y+1, z; (iv) x+1, y, z+1/2.
(II) 2-Bromo-3-(2-nitro-1-phenylethyl)-1H-indole top
Crystal data top
C16H13BrN2O2F(000) = 696
Mr = 345.19Dx = 1.643 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71075 Å
Hall symbol: -P 2ybcCell parameters from 14875 reflections
a = 9.7223 (7) Åθ = 2.9–27.5°
b = 10.2804 (7) ŵ = 2.95 mm1
c = 13.9652 (10) ÅT = 100 K
β = 91.238 (2)°Slab, pale brown
V = 1395.48 (17) Å30.22 × 0.19 × 0.05 mm
Z = 4
Data collection top
Rigaku Mercury CCD
diffractometer
3213 independent reflections
Radiation source: fine-focus sealed tube2911 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.042
ω scansθmax = 27.5°, θmin = 2.9°
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)
h = 1212
Tmin = 0.563, Tmax = 0.867k = 1313
14919 measured reflectionsl = 1817
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.040Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.108H atoms treated by a mixture of independent and constrained refinement
S = 1.07 w = 1/[σ2(Fo2) + (0.0534P)2 + 2.3689P]
where P = (Fo2 + 2Fc2)/3
3213 reflections(Δ/σ)max = 0.001
193 parametersΔρmax = 1.26 e Å3
0 restraintsΔρmin = 0.82 e Å3
Crystal data top
C16H13BrN2O2V = 1395.48 (17) Å3
Mr = 345.19Z = 4
Monoclinic, P21/cMo Kα radiation
a = 9.7223 (7) ŵ = 2.95 mm1
b = 10.2804 (7) ÅT = 100 K
c = 13.9652 (10) Å0.22 × 0.19 × 0.05 mm
β = 91.238 (2)°
Data collection top
Rigaku Mercury CCD
diffractometer
3213 independent reflections
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)
2911 reflections with I > 2σ(I)
Tmin = 0.563, Tmax = 0.867Rint = 0.042
14919 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0400 restraints
wR(F2) = 0.108H atoms treated by a mixture of independent and constrained refinement
S = 1.07Δρmax = 1.26 e Å3
3213 reflectionsΔρmin = 0.82 e Å3
193 parameters
Special details top

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.

Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
C10.4952 (3)0.3822 (3)0.59411 (18)0.0218 (5)
C20.3700 (3)0.3784 (3)0.54275 (19)0.0261 (6)
H20.35100.31200.49700.031*
C30.2753 (3)0.4750 (3)0.5611 (2)0.0297 (6)
H30.18880.47450.52810.036*
C40.3051 (3)0.5740 (3)0.6280 (2)0.0281 (6)
H40.23760.63860.63950.034*
C50.4299 (3)0.5801 (3)0.6776 (2)0.0257 (6)
H50.44920.64890.72130.031*
C60.5274 (3)0.4817 (2)0.66142 (18)0.0210 (5)
C70.6650 (3)0.4559 (3)0.69787 (18)0.0215 (5)
C80.7066 (3)0.3462 (3)0.65211 (19)0.0223 (5)
C90.7553 (3)0.5367 (3)0.76399 (19)0.0229 (5)
H90.83790.48330.78170.027*
C100.6852 (3)0.5750 (3)0.85699 (19)0.0248 (6)
H10A0.74750.63100.89600.030*
H10B0.60030.62490.84200.030*
C110.8057 (3)0.6574 (3)0.70989 (18)0.0219 (5)
C120.7453 (3)0.7795 (3)0.7152 (2)0.0284 (6)
H120.67060.79330.75680.034*
C130.7938 (3)0.8824 (3)0.6596 (2)0.0313 (6)
H130.75200.96570.66390.038*
C140.9025 (3)0.8638 (3)0.5982 (2)0.0294 (6)
H140.93540.93380.56070.035*
C150.9624 (3)0.7418 (3)0.5922 (2)0.0281 (6)
H151.03630.72780.54990.034*
C160.9147 (3)0.6396 (3)0.6479 (2)0.0247 (5)
H160.95700.55660.64360.030*
N10.6058 (3)0.2984 (2)0.59133 (16)0.0230 (5)
H10.623 (4)0.242 (3)0.554 (3)0.028*
N20.6503 (3)0.4554 (2)0.91218 (16)0.0271 (5)
O10.7431 (2)0.3967 (2)0.95513 (16)0.0339 (5)
O20.5300 (3)0.4220 (3)0.91282 (19)0.0464 (6)
Br10.87595 (3)0.26053 (3)0.66349 (2)0.02856 (12)
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
C10.0294 (13)0.0189 (12)0.0174 (11)0.0045 (10)0.0064 (10)0.0008 (9)
C20.0357 (15)0.0257 (13)0.0169 (12)0.0090 (11)0.0020 (11)0.0003 (10)
C30.0280 (14)0.0373 (16)0.0237 (14)0.0035 (12)0.0021 (11)0.0056 (12)
C40.0321 (15)0.0271 (14)0.0255 (14)0.0026 (11)0.0075 (12)0.0026 (11)
C50.0289 (14)0.0279 (14)0.0205 (13)0.0011 (11)0.0059 (11)0.0042 (10)
C60.0279 (13)0.0190 (12)0.0164 (11)0.0039 (10)0.0062 (10)0.0002 (9)
C70.0286 (13)0.0206 (12)0.0155 (11)0.0043 (10)0.0058 (10)0.0007 (9)
C80.0266 (13)0.0222 (12)0.0184 (12)0.0009 (10)0.0058 (10)0.0005 (10)
C90.0272 (13)0.0219 (12)0.0198 (12)0.0006 (10)0.0053 (10)0.0005 (10)
C100.0336 (15)0.0199 (12)0.0210 (13)0.0006 (11)0.0041 (11)0.0007 (10)
C110.0238 (12)0.0246 (13)0.0172 (12)0.0053 (10)0.0016 (10)0.0021 (10)
C120.0313 (15)0.0280 (14)0.0263 (14)0.0014 (12)0.0078 (11)0.0037 (12)
C130.0379 (16)0.0232 (14)0.0329 (15)0.0001 (12)0.0020 (13)0.0002 (12)
C140.0319 (15)0.0314 (15)0.0250 (14)0.0079 (12)0.0010 (11)0.0074 (11)
C150.0242 (13)0.0368 (16)0.0235 (14)0.0051 (11)0.0044 (11)0.0029 (11)
C160.0249 (13)0.0267 (13)0.0226 (13)0.0024 (11)0.0024 (10)0.0012 (11)
N10.0310 (12)0.0192 (11)0.0191 (11)0.0020 (9)0.0053 (9)0.0030 (8)
N20.0453 (15)0.0204 (11)0.0158 (10)0.0012 (10)0.0063 (10)0.0003 (9)
O10.0419 (12)0.0265 (10)0.0335 (11)0.0044 (9)0.0015 (9)0.0070 (9)
O20.0381 (13)0.0549 (16)0.0463 (15)0.0109 (12)0.0043 (11)0.0110 (12)
Br10.03170 (18)0.02778 (17)0.02638 (18)0.00571 (11)0.00434 (12)0.00019 (10)
Geometric parameters (Å, º) top
C1—N11.379 (4)C9—H91.0000
C1—C21.399 (4)C10—N21.495 (3)
C1—C61.419 (4)C10—H10A0.9900
C2—C31.382 (4)C10—H10B0.9900
C2—H20.9500C11—C121.388 (4)
C3—C41.408 (4)C11—C161.395 (4)
C3—H30.9500C12—C131.400 (4)
C4—C51.385 (4)C12—H120.9500
C4—H40.9500C13—C141.388 (4)
C5—C61.408 (4)C13—H130.9500
C5—H50.9500C14—C151.387 (4)
C6—C71.445 (4)C14—H140.9500
C7—C81.363 (4)C15—C161.392 (4)
C7—C91.510 (4)C15—H150.9500
C8—N11.373 (4)C16—H160.9500
C8—Br11.871 (3)N1—H10.80 (4)
C9—C101.531 (4)N2—O21.219 (4)
C9—C111.538 (4)N2—O11.231 (3)
N1—C1—C2129.7 (2)N2—C10—C9109.6 (2)
N1—C1—C6107.9 (2)N2—C10—H10A109.7
C2—C1—C6122.5 (3)C9—C10—H10A109.7
C3—C2—C1117.4 (3)N2—C10—H10B109.7
C3—C2—H2121.3C9—C10—H10B109.7
C1—C2—H2121.3H10A—C10—H10B108.2
C2—C3—C4121.0 (3)C12—C11—C16118.7 (3)
C2—C3—H3119.5C12—C11—C9124.3 (2)
C4—C3—H3119.5C16—C11—C9117.0 (2)
C5—C4—C3122.0 (3)C11—C12—C13120.4 (3)
C5—C4—H4119.0C11—C12—H12119.8
C3—C4—H4119.0C13—C12—H12119.8
C4—C5—C6118.2 (3)C14—C13—C12120.5 (3)
C4—C5—H5120.9C14—C13—H13119.7
C6—C5—H5120.9C12—C13—H13119.7
C5—C6—C1118.9 (3)C15—C14—C13119.3 (3)
C5—C6—C7134.1 (3)C15—C14—H14120.4
C1—C6—C7106.9 (2)C13—C14—H14120.4
C8—C7—C6105.6 (2)C14—C15—C16120.2 (3)
C8—C7—C9124.6 (3)C14—C15—H15119.9
C6—C7—C9129.5 (2)C16—C15—H15119.9
C7—C8—N1111.7 (2)C15—C16—C11121.0 (3)
C7—C8—Br1128.3 (2)C15—C16—H16119.5
N1—C8—Br1120.0 (2)C11—C16—H16119.5
C7—C9—C10113.4 (2)C8—N1—C1107.8 (2)
C7—C9—C11109.3 (2)C8—N1—H1121 (3)
C10—C9—C11111.2 (2)C1—N1—H1130 (3)
C7—C9—H9107.6O2—N2—O1123.5 (3)
C10—C9—H9107.6O2—N2—C10117.6 (3)
C11—C9—H9107.6O1—N2—C10118.8 (3)
N1—C1—C2—C3178.9 (3)C6—C7—C9—C1171.6 (3)
C6—C1—C2—C31.3 (4)C7—C9—C10—N262.0 (3)
C1—C2—C3—C40.9 (4)C11—C9—C10—N2174.4 (2)
C2—C3—C4—C50.6 (4)C7—C9—C11—C1297.6 (3)
C3—C4—C5—C61.6 (4)C10—C9—C11—C1228.4 (4)
C4—C5—C6—C11.2 (4)C7—C9—C11—C1678.9 (3)
C4—C5—C6—C7179.5 (3)C10—C9—C11—C16155.2 (2)
N1—C1—C6—C5179.9 (2)C16—C11—C12—C130.3 (4)
C2—C1—C6—C50.2 (4)C9—C11—C12—C13176.7 (3)
N1—C1—C6—C71.3 (3)C11—C12—C13—C140.2 (5)
C2—C1—C6—C7178.5 (2)C12—C13—C14—C150.2 (5)
C5—C6—C7—C8178.4 (3)C13—C14—C15—C160.6 (4)
C1—C6—C7—C80.0 (3)C14—C15—C16—C110.5 (4)
C5—C6—C7—C94.7 (5)C12—C11—C16—C150.0 (4)
C1—C6—C7—C9173.8 (2)C9—C11—C16—C15176.6 (3)
C6—C7—C8—N11.4 (3)C7—C8—N1—C12.3 (3)
C9—C7—C8—N1175.6 (2)Br1—C8—N1—C1177.72 (18)
C6—C7—C8—Br1178.61 (19)C2—C1—N1—C8177.6 (3)
C9—C7—C8—Br14.5 (4)C6—C1—N1—C82.2 (3)
C8—C7—C9—C10134.3 (3)C9—C10—N2—O2105.5 (3)
C6—C7—C9—C1053.0 (4)C9—C10—N2—O175.3 (3)
C8—C7—C9—C11101.0 (3)
Hydrogen-bond geometry (Å, º) top
Cg2 and Cg4 are the centroids of the C1–C6 ring.
D—H···AD—HH···AD···AD—H···A
N1—H1···O1i0.80 (4)2.32 (4)3.087 (3)161 (4)
C12—H12···Cg2ii0.952.753.500 (3)136
Symmetry codes: (i) x, y+1/2, z1/2; (ii) x+1, y+1/2, z+3/2.
(III) 5-Methoxy-3-(2-nitro-1-phenylethyl)-2-phenyl-1H-indole top
Crystal data top
C23H20N2O3Z = 2
Mr = 372.41F(000) = 392
Triclinic, P1Dx = 1.316 Mg m3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71075 Å
a = 9.7561 (7) ÅCell parameters from 12105 reflections
b = 10.0258 (7) Åθ = 2.9–27.5°
c = 10.8942 (8) ŵ = 0.09 mm1
α = 116.415 (5)°T = 100 K
β = 91.843 (4)°Slab, light yellow
γ = 97.963 (4)°0.24 × 0.21 × 0.03 mm
V = 939.84 (12) Å3
Data collection top
Rigaku Mercury CCD
diffractometer
3782 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tubeRint = 0.028
Graphite monochromatorθmax = 27.5°, θmin = 2.9°
ω scansh = 1212
12625 measured reflectionsk = 1313
4305 independent reflectionsl = 1414
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.035Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.097H atoms treated by a mixture of independent and constrained refinement
S = 1.06 w = 1/[σ2(Fo2) + (0.0492P)2 + 0.1954P]
where P = (Fo2 + 2Fc2)/3
4305 reflections(Δ/σ)max = 0.001
257 parametersΔρmax = 0.30 e Å3
0 restraintsΔρmin = 0.22 e Å3
Crystal data top
C23H20N2O3γ = 97.963 (4)°
Mr = 372.41V = 939.84 (12) Å3
Triclinic, P1Z = 2
a = 9.7561 (7) ÅMo Kα radiation
b = 10.0258 (7) ŵ = 0.09 mm1
c = 10.8942 (8) ÅT = 100 K
α = 116.415 (5)°0.24 × 0.21 × 0.03 mm
β = 91.843 (4)°
Data collection top
Rigaku Mercury CCD
diffractometer
3782 reflections with I > 2σ(I)
12625 measured reflectionsRint = 0.028
4305 independent reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0350 restraints
wR(F2) = 0.097H atoms treated by a mixture of independent and constrained refinement
S = 1.06Δρmax = 0.30 e Å3
4305 reflectionsΔρmin = 0.22 e Å3
257 parameters
Special details top

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.

Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
C10.19835 (10)0.50476 (11)0.67418 (11)0.0204 (2)
C20.17538 (11)0.56338 (12)0.81213 (11)0.0230 (2)
H20.17690.66860.86610.028*
C30.15006 (11)0.46425 (12)0.86931 (11)0.0218 (2)
H30.13340.50150.96330.026*
C40.14906 (10)0.30892 (11)0.78826 (11)0.0199 (2)
C50.17195 (10)0.25007 (11)0.65095 (10)0.0196 (2)
H50.17090.14480.59790.024*
C60.19683 (10)0.34839 (11)0.59073 (10)0.0191 (2)
C70.22732 (10)0.33046 (11)0.45606 (10)0.0191 (2)
C80.24758 (10)0.47341 (11)0.46426 (10)0.0203 (2)
C90.22632 (10)0.18956 (11)0.32343 (10)0.0191 (2)
H90.21380.21820.24730.023*
C100.10313 (10)0.06333 (11)0.29937 (11)0.0209 (2)
H10A0.10670.02590.21040.025*
H10B0.10970.03240.37360.025*
C110.35712 (10)0.11774 (11)0.30199 (11)0.0197 (2)
C120.45009 (11)0.13848 (12)0.41090 (11)0.0222 (2)
H120.43370.20040.50310.027*
C130.56717 (11)0.06865 (12)0.38520 (12)0.0246 (2)
H130.63020.08310.46010.030*
C140.59239 (11)0.02169 (12)0.25117 (12)0.0258 (2)
H140.67260.06870.23420.031*
C150.49987 (12)0.04312 (12)0.14192 (12)0.0263 (2)
H150.51660.10490.04980.032*
C160.38279 (11)0.02591 (12)0.16739 (11)0.0238 (2)
H160.31950.01040.09230.029*
C170.29178 (11)0.52239 (11)0.36018 (11)0.0216 (2)
C180.21895 (12)0.61533 (12)0.32766 (11)0.0263 (2)
H180.13600.64270.36820.032*
C190.26838 (14)0.66735 (13)0.23588 (12)0.0324 (3)
H190.21950.73130.21460.039*
C200.38861 (14)0.62652 (13)0.17520 (12)0.0333 (3)
H200.42180.66270.11260.040*
C210.46049 (12)0.53318 (14)0.20555 (12)0.0309 (3)
H210.54240.50460.16320.037*
C220.41268 (11)0.48128 (13)0.29814 (11)0.0255 (2)
H220.46230.41770.31930.031*
C230.13008 (14)0.25934 (13)0.98450 (11)0.0301 (3)
H23A0.11790.17371.00620.045*
H23B0.05560.31851.01940.045*
H23C0.22040.32351.02800.045*
N10.22919 (10)0.57768 (10)0.59438 (9)0.02257 (19)
H10.2353 (14)0.6738 (16)0.6209 (14)0.027*
N20.03129 (9)0.11860 (10)0.29782 (10)0.0245 (2)
O10.09938 (8)0.14343 (9)0.39586 (9)0.0325 (2)
O20.06497 (9)0.13940 (10)0.19906 (10)0.0348 (2)
O30.12460 (8)0.20475 (8)0.83947 (7)0.02322 (17)
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
C10.0195 (5)0.0209 (5)0.0220 (5)0.0045 (4)0.0026 (4)0.0104 (4)
C20.0250 (5)0.0197 (5)0.0228 (5)0.0063 (4)0.0036 (4)0.0075 (4)
C30.0213 (5)0.0246 (5)0.0191 (5)0.0062 (4)0.0039 (4)0.0088 (4)
C40.0161 (4)0.0225 (5)0.0229 (5)0.0030 (4)0.0022 (4)0.0120 (4)
C50.0178 (5)0.0188 (4)0.0216 (5)0.0037 (3)0.0025 (4)0.0085 (4)
C60.0156 (4)0.0207 (5)0.0204 (5)0.0038 (3)0.0020 (4)0.0087 (4)
C70.0165 (4)0.0208 (5)0.0201 (5)0.0031 (3)0.0021 (4)0.0094 (4)
C80.0186 (5)0.0212 (5)0.0205 (5)0.0037 (4)0.0012 (4)0.0088 (4)
C90.0172 (4)0.0207 (5)0.0200 (5)0.0036 (4)0.0026 (4)0.0098 (4)
C100.0173 (5)0.0199 (5)0.0251 (5)0.0045 (4)0.0029 (4)0.0093 (4)
C110.0180 (4)0.0196 (4)0.0227 (5)0.0030 (3)0.0046 (4)0.0104 (4)
C120.0199 (5)0.0217 (5)0.0229 (5)0.0022 (4)0.0022 (4)0.0086 (4)
C130.0184 (5)0.0256 (5)0.0292 (6)0.0018 (4)0.0007 (4)0.0126 (5)
C140.0191 (5)0.0258 (5)0.0353 (6)0.0062 (4)0.0074 (4)0.0153 (5)
C150.0271 (5)0.0277 (5)0.0256 (5)0.0085 (4)0.0100 (4)0.0120 (5)
C160.0235 (5)0.0275 (5)0.0221 (5)0.0061 (4)0.0044 (4)0.0122 (4)
C170.0233 (5)0.0191 (5)0.0204 (5)0.0008 (4)0.0005 (4)0.0086 (4)
C180.0343 (6)0.0205 (5)0.0218 (5)0.0052 (4)0.0003 (4)0.0074 (4)
C190.0514 (7)0.0217 (5)0.0236 (6)0.0034 (5)0.0024 (5)0.0111 (4)
C200.0446 (7)0.0286 (6)0.0234 (6)0.0094 (5)0.0017 (5)0.0136 (5)
C210.0266 (5)0.0369 (6)0.0249 (6)0.0061 (5)0.0013 (4)0.0135 (5)
C220.0220 (5)0.0283 (5)0.0253 (5)0.0006 (4)0.0006 (4)0.0129 (5)
C230.0429 (7)0.0261 (5)0.0213 (5)0.0033 (5)0.0039 (5)0.0117 (5)
N10.0283 (5)0.0177 (4)0.0223 (4)0.0047 (3)0.0042 (4)0.0093 (4)
N20.0186 (4)0.0191 (4)0.0321 (5)0.0024 (3)0.0020 (4)0.0087 (4)
O10.0209 (4)0.0300 (4)0.0343 (5)0.0038 (3)0.0078 (3)0.0036 (4)
O20.0278 (4)0.0361 (5)0.0484 (5)0.0061 (3)0.0020 (4)0.0265 (4)
O30.0286 (4)0.0217 (4)0.0199 (4)0.0019 (3)0.0031 (3)0.0106 (3)
Geometric parameters (Å, º) top
C1—N11.3791 (13)C13—C141.3860 (16)
C1—C21.3880 (14)C13—H130.9500
C1—C61.4174 (14)C14—C151.3883 (16)
C2—C31.3891 (14)C14—H140.9500
C2—H20.9500C15—C161.3889 (15)
C3—C41.4060 (14)C15—H150.9500
C3—H30.9500C16—H160.9500
C4—C51.3814 (14)C17—C221.3986 (15)
C4—O31.3846 (12)C17—C181.3999 (15)
C5—C61.4072 (14)C18—C191.3891 (16)
C5—H50.9500C18—H180.9500
C6—C71.4428 (13)C19—C201.3865 (19)
C7—C81.3811 (14)C19—H190.9500
C7—C91.5042 (14)C20—C211.3853 (18)
C8—N11.3728 (14)C20—H200.9500
C8—C171.4768 (14)C21—C221.3914 (15)
C9—C111.5250 (14)C21—H210.9500
C9—C101.5421 (13)C22—H220.9500
C9—H91.0000C23—O31.4198 (13)
C10—N21.4951 (13)C23—H23A0.9800
C10—H10A0.9900C23—H23B0.9800
C10—H10B0.9900C23—H23C0.9800
C11—C121.3901 (15)N1—H10.867 (14)
C11—C161.3954 (15)N2—O11.2243 (12)
C12—C131.3933 (15)N2—O21.2267 (13)
C12—H120.9500
N1—C1—C2129.92 (9)C14—C13—H13119.8
N1—C1—C6107.75 (9)C12—C13—H13119.8
C2—C1—C6122.32 (9)C13—C14—C15119.66 (10)
C1—C2—C3118.32 (9)C13—C14—H14120.2
C1—C2—H2120.8C15—C14—H14120.2
C3—C2—H2120.8C14—C15—C16119.93 (10)
C2—C3—C4120.11 (9)C14—C15—H15120.0
C2—C3—H3119.9C16—C15—H15120.0
C4—C3—H3119.9C15—C16—C11120.75 (10)
C5—C4—O3115.49 (9)C15—C16—H16119.6
C5—C4—C3121.77 (9)C11—C16—H16119.6
O3—C4—C3122.74 (9)C22—C17—C18119.44 (10)
C4—C5—C6119.03 (9)C22—C17—C8119.24 (9)
C4—C5—H5120.5C18—C17—C8121.24 (10)
C6—C5—H5120.5C19—C18—C17119.78 (11)
C5—C6—C1118.44 (9)C19—C18—H18120.1
C5—C6—C7134.84 (9)C17—C18—H18120.1
C1—C6—C7106.69 (9)C20—C19—C18120.42 (11)
C8—C7—C6106.53 (9)C20—C19—H19119.8
C8—C7—C9122.90 (9)C18—C19—H19119.8
C6—C7—C9130.34 (9)C21—C20—C19120.20 (10)
N1—C8—C7109.81 (9)C21—C20—H20119.9
N1—C8—C17120.54 (9)C19—C20—H20119.9
C7—C8—C17129.53 (9)C20—C21—C22119.95 (11)
C7—C9—C11116.98 (8)C20—C21—H21120.0
C7—C9—C10113.02 (8)C22—C21—H21120.0
C11—C9—C10106.58 (8)C21—C22—C17120.20 (11)
C7—C9—H9106.5C21—C22—H22119.9
C11—C9—H9106.5C17—C22—H22119.9
C10—C9—H9106.5O3—C23—H23A109.5
N2—C10—C9109.91 (8)O3—C23—H23B109.5
N2—C10—H10A109.7H23A—C23—H23B109.5
C9—C10—H10A109.7O3—C23—H23C109.5
N2—C10—H10B109.7H23A—C23—H23C109.5
C9—C10—H10B109.7H23B—C23—H23C109.5
H10A—C10—H10B108.2C8—N1—C1109.21 (9)
C12—C11—C16119.01 (9)C8—N1—H1124.8 (9)
C12—C11—C9122.66 (9)C1—N1—H1126.0 (9)
C16—C11—C9118.32 (9)O1—N2—O2124.00 (10)
C11—C12—C13120.17 (10)O1—N2—C10118.40 (9)
C11—C12—H12119.9O2—N2—C10117.58 (9)
C13—C12—H12119.9C4—O3—C23118.32 (8)
C14—C13—C12120.48 (10)
N1—C1—C2—C3178.02 (10)C10—C9—C11—C1675.88 (11)
C6—C1—C2—C30.03 (16)C16—C11—C12—C130.21 (15)
C1—C2—C3—C40.44 (15)C9—C11—C12—C13179.28 (9)
C2—C3—C4—C50.41 (16)C11—C12—C13—C140.17 (15)
C2—C3—C4—O3179.94 (9)C12—C13—C14—C150.27 (15)
O3—C4—C5—C6179.63 (8)C13—C14—C15—C160.00 (16)
C3—C4—C5—C60.04 (15)C14—C15—C16—C110.38 (16)
C4—C5—C6—C10.44 (14)C12—C11—C16—C150.48 (15)
C4—C5—C6—C7178.27 (10)C9—C11—C16—C15179.60 (9)
N1—C1—C6—C5177.97 (9)N1—C8—C17—C22123.13 (11)
C2—C1—C6—C50.42 (15)C7—C8—C17—C2252.40 (15)
N1—C1—C6—C70.42 (11)N1—C8—C17—C1853.62 (14)
C2—C1—C6—C7178.81 (9)C7—C8—C17—C18130.85 (12)
C5—C6—C7—C8177.12 (11)C22—C17—C18—C190.89 (16)
C1—C6—C7—C80.88 (11)C8—C17—C18—C19175.85 (10)
C5—C6—C7—C98.44 (19)C17—C18—C19—C200.67 (17)
C1—C6—C7—C9173.56 (10)C18—C19—C20—C210.07 (17)
C6—C7—C8—N11.04 (11)C19—C20—C21—C220.58 (17)
C9—C7—C8—N1173.92 (9)C20—C21—C22—C170.34 (17)
C6—C7—C8—C17174.87 (10)C18—C17—C22—C210.39 (16)
C9—C7—C8—C1710.17 (17)C8—C17—C22—C21176.42 (10)
C8—C7—C9—C11102.46 (11)C7—C8—N1—C10.80 (12)
C6—C7—C9—C1183.89 (13)C17—C8—N1—C1175.54 (9)
C8—C7—C9—C10133.20 (10)C2—C1—N1—C8178.01 (10)
C6—C7—C9—C1040.46 (14)C6—C1—N1—C80.21 (11)
C7—C9—C10—N258.52 (11)C9—C10—N2—O1108.24 (10)
C11—C9—C10—N2171.63 (8)C9—C10—N2—O270.21 (11)
C7—C9—C11—C1224.35 (13)C5—C4—O3—C23166.65 (9)
C10—C9—C11—C12103.20 (10)C3—C4—O3—C2313.68 (14)
C7—C9—C11—C16156.57 (9)
Hydrogen-bond geometry (Å, º) top
Cg2 and Cg4 are the centroids of the C1–C6 and C17–C22 rings, respectively.
D—H···AD—HH···AD···AD—H···A
N1—H1···O1i0.867 (14)2.470 (14)3.1872 (13)140.5 (12)
C10—H10A···O3ii0.992.562.9934 (14)107
C14—H14···O3iii0.952.513.4546 (14)173
C18—H18···O1i0.952.593.2877 (14)131
C21—H21···Cg2iv0.952.833.5297 (13)131
C23—H23C···Cg4v0.982.763.5781 (13)141
Symmetry codes: (i) x, y+1, z+1; (ii) x, y, z+1; (iii) x+1, y, z+1; (iv) x+1, y+1, z+1; (v) x, y, z+1.
(IV) 5-Chloro-3-(2-nitro-1-phenylethyl)-2-phenyl-1H-indole top
Crystal data top
C22H17ClN2O2V = 919.87 (11) Å3
Mr = 376.83Z = 2
Triclinic, P1F(000) = 392
Hall symbol: -P 1Dx = 1.360 Mg m3
a = 9.5830 (7) ÅMo Kα radiation, λ = 0.71073 Å
b = 9.7555 (7) ŵ = 0.23 mm1
c = 10.2307 (7) ÅT = 100 K
α = 79.546 (6)°Block, colourless
β = 77.966 (6)°0.48 × 0.36 × 0.16 mm
γ = 87.455 (7)°
Data collection top
Rigaku Mercury CCD
diffractometer
4138 independent reflections
Radiation source: fine-focus sealed tube3363 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.023
ω scansθmax = 27.5°, θmin = 2.1°
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)
h = 1212
Tmin = 0.899, Tmax = 0.965k = 1112
13253 measured reflectionsl = 1313
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.031Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.085H atoms treated by a mixture of independent and constrained refinement
S = 1.06 w = 1/[σ2(Fo2) + (0.044P)2 + 0.1384P]
where P = (Fo2 + 2Fc2)/3
4138 reflections(Δ/σ)max = 0.002
247 parametersΔρmax = 0.27 e Å3
0 restraintsΔρmin = 0.23 e Å3
Crystal data top
C22H17ClN2O2γ = 87.455 (7)°
Mr = 376.83V = 919.87 (11) Å3
Triclinic, P1Z = 2
a = 9.5830 (7) ÅMo Kα radiation
b = 9.7555 (7) ŵ = 0.23 mm1
c = 10.2307 (7) ÅT = 100 K
α = 79.546 (6)°0.48 × 0.36 × 0.16 mm
β = 77.966 (6)°
Data collection top
Rigaku Mercury CCD
diffractometer
4138 independent reflections
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)
3363 reflections with I > 2σ(I)
Tmin = 0.899, Tmax = 0.965Rint = 0.023
13253 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0310 restraints
wR(F2) = 0.085H atoms treated by a mixture of independent and constrained refinement
S = 1.06Δρmax = 0.27 e Å3
4138 reflectionsΔρmin = 0.23 e Å3
247 parameters
Special details top

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.

Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
C10.30134 (13)0.30487 (13)0.47178 (13)0.0244 (3)
C20.15631 (13)0.33679 (14)0.49919 (14)0.0293 (3)
H20.10670.33980.58930.035*
C30.08662 (13)0.36395 (14)0.39233 (14)0.0293 (3)
H30.01240.38580.40770.035*
C40.16322 (13)0.35909 (14)0.26078 (13)0.0259 (3)
C50.30654 (12)0.32723 (13)0.23105 (13)0.0232 (3)
H50.35470.32500.14040.028*
C60.37928 (12)0.29823 (12)0.33886 (12)0.0213 (2)
C70.52344 (12)0.26002 (12)0.35141 (12)0.0208 (2)
C80.52687 (13)0.24560 (13)0.48676 (13)0.0234 (3)
C90.65601 (12)0.24850 (13)0.24431 (12)0.0206 (2)
H90.73950.25860.28630.025*
C100.66676 (13)0.36530 (13)0.12008 (12)0.0230 (3)
H10A0.76130.36100.05930.028*
H10B0.59270.35230.06890.028*
C110.67609 (12)0.11141 (13)0.19138 (12)0.0205 (2)
C120.56223 (13)0.03868 (13)0.17345 (12)0.0232 (3)
H120.46760.07210.19880.028*
C130.58560 (13)0.08258 (13)0.11871 (13)0.0253 (3)
H130.50700.13140.10650.030*
C140.72269 (14)0.13258 (13)0.08191 (13)0.0260 (3)
H140.73850.21500.04350.031*
C150.83681 (14)0.06224 (14)0.10125 (15)0.0300 (3)
H150.93110.09710.07740.036*
C160.81368 (13)0.05913 (14)0.15540 (14)0.0275 (3)
H160.89250.10720.16810.033*
C170.64585 (13)0.20526 (14)0.55687 (12)0.0243 (3)
C180.68391 (14)0.28733 (15)0.64173 (14)0.0308 (3)
H180.63600.37330.65160.037*
C190.79159 (16)0.24370 (18)0.71180 (16)0.0402 (4)
H190.81660.29940.77040.048*
C200.86283 (16)0.11925 (18)0.69676 (16)0.0414 (4)
H200.93640.08980.74530.050*
C210.82741 (14)0.03761 (16)0.61152 (15)0.0355 (3)
H210.87680.04760.60110.043*
C220.71956 (13)0.08033 (14)0.54118 (13)0.0278 (3)
H220.69560.02450.48210.033*
N10.39365 (11)0.27288 (12)0.55865 (11)0.0263 (2)
H10.3714 (16)0.2700 (17)0.6404 (17)0.032*
N20.64715 (11)0.50447 (11)0.16313 (11)0.0258 (2)
O10.55567 (10)0.58312 (10)0.12206 (11)0.0354 (2)
O20.72277 (11)0.53298 (10)0.23676 (10)0.0357 (2)
Cl10.07128 (3)0.39630 (4)0.12679 (3)0.03265 (10)
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
C10.0251 (6)0.0227 (7)0.0221 (6)0.0022 (5)0.0018 (5)0.0036 (5)
C20.0257 (6)0.0306 (7)0.0269 (7)0.0039 (5)0.0054 (5)0.0059 (6)
C30.0212 (6)0.0281 (7)0.0343 (7)0.0043 (5)0.0023 (5)0.0051 (6)
C40.0243 (6)0.0230 (7)0.0285 (6)0.0019 (5)0.0038 (5)0.0020 (5)
C50.0224 (6)0.0215 (6)0.0224 (6)0.0005 (5)0.0016 (5)0.0029 (5)
C60.0214 (5)0.0182 (6)0.0216 (6)0.0012 (4)0.0025 (4)0.0043 (5)
C70.0209 (5)0.0189 (6)0.0210 (6)0.0012 (4)0.0004 (4)0.0046 (5)
C80.0239 (6)0.0205 (6)0.0233 (6)0.0012 (4)0.0012 (5)0.0046 (5)
C90.0195 (5)0.0210 (6)0.0199 (6)0.0006 (4)0.0001 (4)0.0044 (5)
C100.0242 (6)0.0207 (6)0.0222 (6)0.0007 (5)0.0007 (5)0.0055 (5)
C110.0223 (5)0.0198 (6)0.0170 (5)0.0007 (4)0.0002 (4)0.0023 (5)
C120.0212 (5)0.0223 (6)0.0235 (6)0.0013 (4)0.0010 (4)0.0017 (5)
C130.0277 (6)0.0227 (7)0.0248 (6)0.0037 (5)0.0048 (5)0.0028 (5)
C140.0337 (7)0.0197 (6)0.0229 (6)0.0004 (5)0.0003 (5)0.0056 (5)
C150.0243 (6)0.0281 (7)0.0357 (7)0.0049 (5)0.0016 (5)0.0106 (6)
C160.0211 (6)0.0267 (7)0.0354 (7)0.0000 (5)0.0015 (5)0.0120 (6)
C170.0235 (6)0.0269 (7)0.0190 (6)0.0017 (5)0.0011 (4)0.0010 (5)
C180.0306 (7)0.0329 (8)0.0275 (7)0.0015 (5)0.0004 (5)0.0075 (6)
C190.0373 (8)0.0517 (10)0.0345 (8)0.0071 (7)0.0100 (6)0.0105 (7)
C200.0312 (7)0.0536 (10)0.0386 (8)0.0008 (7)0.0132 (6)0.0009 (7)
C210.0293 (7)0.0344 (8)0.0379 (8)0.0037 (6)0.0047 (6)0.0026 (6)
C220.0286 (6)0.0260 (7)0.0263 (6)0.0001 (5)0.0023 (5)0.0021 (5)
N10.0257 (5)0.0324 (6)0.0179 (5)0.0043 (4)0.0025 (4)0.0055 (5)
N20.0279 (5)0.0211 (6)0.0242 (5)0.0030 (4)0.0049 (4)0.0039 (4)
O10.0314 (5)0.0234 (5)0.0466 (6)0.0044 (4)0.0006 (4)0.0034 (4)
O20.0465 (6)0.0291 (6)0.0326 (5)0.0025 (4)0.0066 (4)0.0100 (4)
Cl10.02364 (15)0.0386 (2)0.03372 (18)0.00338 (12)0.00654 (12)0.00124 (14)
Geometric parameters (Å, º) top
C1—N11.3683 (17)C12—C131.3885 (18)
C1—C21.3921 (17)C12—H120.9500
C1—C61.4197 (16)C13—C141.3817 (18)
C2—C31.3766 (19)C13—H130.9500
C2—H20.9500C14—C151.3828 (19)
C3—C41.4002 (18)C14—H140.9500
C3—H30.9500C15—C161.3862 (19)
C4—C51.3775 (16)C15—H150.9500
C4—Cl11.7556 (13)C16—H160.9500
C5—C61.4044 (17)C17—C181.3922 (19)
C5—H50.9500C17—C221.3991 (19)
C6—C71.4404 (16)C18—C191.385 (2)
C7—C81.3734 (17)C18—H180.9500
C7—C91.5096 (15)C19—C201.384 (2)
C8—N11.3751 (15)C19—H190.9500
C8—C171.4724 (17)C20—C211.382 (2)
C9—C111.5216 (17)C20—H200.9500
C9—C101.5344 (17)C21—C221.3866 (19)
C9—H91.0000C21—H210.9500
C10—N21.4941 (16)C22—H220.9500
C10—H10A0.9900N1—H10.814 (16)
C10—H10B0.9900N2—O21.2213 (14)
C11—C121.3881 (17)N2—O11.2291 (14)
C11—C161.3929 (16)
N1—C1—C2129.73 (12)C11—C12—C13120.50 (11)
N1—C1—C6107.57 (10)C11—C12—H12119.8
C2—C1—C6122.70 (12)C13—C12—H12119.8
C3—C2—C1118.29 (12)C14—C13—C12120.29 (11)
C3—C2—H2120.9C14—C13—H13119.9
C1—C2—H2120.9C12—C13—H13119.9
C2—C3—C4119.30 (11)C13—C14—C15119.74 (12)
C2—C3—H3120.4C13—C14—H14120.1
C4—C3—H3120.4C15—C14—H14120.1
C5—C4—C3123.55 (12)C14—C15—C16120.03 (12)
C5—C4—Cl1118.42 (10)C14—C15—H15120.0
C3—C4—Cl1118.03 (10)C16—C15—H15120.0
C4—C5—C6117.99 (11)C15—C16—C11120.73 (12)
C4—C5—H5121.0C15—C16—H16119.6
C6—C5—H5121.0C11—C16—H16119.6
C5—C6—C1118.18 (10)C18—C17—C22119.25 (12)
C5—C6—C7135.24 (11)C18—C17—C8121.17 (12)
C1—C6—C7106.59 (11)C22—C17—C8119.56 (12)
C8—C7—C6106.72 (10)C19—C18—C17120.07 (14)
C8—C7—C9122.33 (11)C19—C18—H18120.0
C6—C7—C9130.71 (11)C17—C18—H18120.0
C7—C8—N1109.55 (11)C20—C19—C18120.24 (14)
C7—C8—C17129.83 (11)C20—C19—H19119.9
N1—C8—C17120.61 (11)C18—C19—H19119.9
C7—C9—C11115.84 (10)C21—C20—C19120.30 (14)
C7—C9—C10112.82 (10)C21—C20—H20119.8
C11—C9—C10106.89 (9)C19—C20—H20119.8
C7—C9—H9106.9C20—C21—C22119.85 (14)
C11—C9—H9106.9C20—C21—H21120.1
C10—C9—H9106.9C22—C21—H21120.1
N2—C10—C9110.47 (10)C21—C22—C17120.27 (13)
N2—C10—H10A109.6C21—C22—H22119.9
C9—C10—H10A109.6C17—C22—H22119.9
N2—C10—H10B109.6C1—N1—C8109.57 (11)
C9—C10—H10B109.6C1—N1—H1124.3 (11)
H10A—C10—H10B108.1C8—N1—H1126.1 (11)
C12—C11—C16118.70 (11)O2—N2—O1124.12 (11)
C12—C11—C9122.24 (10)O2—N2—C10118.09 (11)
C16—C11—C9119.02 (11)O1—N2—C10117.78 (11)
N1—C1—C2—C3179.28 (14)C7—C9—C11—C16145.63 (12)
C6—C1—C2—C30.5 (2)C10—C9—C11—C1687.68 (13)
C1—C2—C3—C40.2 (2)C16—C11—C12—C131.00 (18)
C2—C3—C4—C50.5 (2)C9—C11—C12—C13176.86 (11)
C2—C3—C4—Cl1179.27 (11)C11—C12—C13—C140.26 (18)
C3—C4—C5—C60.0 (2)C12—C13—C14—C150.75 (19)
Cl1—C4—C5—C6179.72 (10)C13—C14—C15—C161.0 (2)
C4—C5—C6—C10.66 (18)C14—C15—C16—C110.2 (2)
C4—C5—C6—C7179.07 (13)C12—C11—C16—C150.75 (19)
N1—C1—C6—C5179.96 (11)C9—C11—C16—C15177.17 (12)
C2—C1—C6—C50.96 (19)C7—C8—C17—C18127.05 (15)
N1—C1—C6—C70.16 (14)N1—C8—C17—C1854.28 (17)
C2—C1—C6—C7178.84 (12)C7—C8—C17—C2254.79 (19)
C5—C6—C7—C8179.77 (14)N1—C8—C17—C22123.88 (14)
C1—C6—C7—C80.02 (14)C22—C17—C18—C191.4 (2)
C5—C6—C7—C95.8 (2)C8—C17—C18—C19176.80 (12)
C1—C6—C7—C9174.44 (12)C17—C18—C19—C200.7 (2)
C6—C7—C8—N10.13 (14)C18—C19—C20—C210.2 (2)
C9—C7—C8—N1174.87 (11)C19—C20—C21—C220.3 (2)
C6—C7—C8—C17178.65 (13)C20—C21—C22—C170.4 (2)
C9—C7—C8—C176.4 (2)C18—C17—C22—C211.24 (19)
C8—C7—C9—C11102.42 (14)C8—C17—C22—C21176.96 (12)
C6—C7—C9—C1183.90 (16)C2—C1—N1—C8178.66 (14)
C8—C7—C9—C10133.94 (12)C6—C1—N1—C80.25 (14)
C6—C7—C9—C1039.74 (17)C7—C8—N1—C10.24 (15)
C7—C9—C10—N251.15 (13)C17—C8—N1—C1178.67 (11)
C11—C9—C10—N2179.61 (9)C9—C10—N2—O253.52 (14)
C7—C9—C11—C1236.52 (16)C9—C10—N2—O1126.47 (11)
C10—C9—C11—C1290.17 (13)
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N1—H1···O2i0.814 (16)2.517 (16)3.0806 (15)127.4 (14)
C14—H14···O1ii0.952.603.1827 (17)120
Symmetry codes: (i) x+1, y+1, z+1; (ii) x, y1, z.
Hydrogen-bond geometry (Å, º) for (I) top
Cg2 and Cg4 are the centroids of the C1–C6 and C20–C25 rings, respectively.
D—H···AD—HH···AD···AD—H···A
C21—H21···O20.932.343.258 (2)169
N1—H1···O2i0.91 (2)1.95 (2)2.8310 (18)163.0 (18)
C10—H10A···Cg4ii0.972.933.8022 (18)150
C12—H12A···Cg2iii0.972.973.702 (2)133
C16—H16···Cg4iv0.932.783.643 (2)154
C19—H19···Cg2i0.932.963.7860 (18)149
Symmetry codes: (i) x+1/2, y1/2, z; (ii) x1/2, y1/2, z; (iii) x+1, y+1, z; (iv) x+1, y, z+1/2.
Hydrogen-bond geometry (Å, º) for (II) top
Cg2 and Cg4 are the centroids of the C1–C6 ring.
D—H···AD—HH···AD···AD—H···A
N1—H1···O1i0.80 (4)2.32 (4)3.087 (3)161 (4)
C12—H12···Cg2ii0.952.753.500 (3)136
Symmetry codes: (i) x, y+1/2, z1/2; (ii) x+1, y+1/2, z+3/2.
Hydrogen-bond geometry (Å, º) for (III) top
Cg2 and Cg4 are the centroids of the C1–C6 and C17–C22 rings, respectively.
D—H···AD—HH···AD···AD—H···A
N1—H1···O1i0.867 (14)2.470 (14)3.1872 (13)140.5 (12)
C10—H10A···O3ii0.992.562.9934 (14)107
C14—H14···O3iii0.952.513.4546 (14)173
C18—H18···O1i0.952.593.2877 (14)131
C21—H21···Cg2iv0.952.833.5297 (13)131
C23—H23C···Cg4v0.982.763.5781 (13)141
Symmetry codes: (i) x, y+1, z+1; (ii) x, y, z+1; (iii) x+1, y, z+1; (iv) x+1, y+1, z+1; (v) x, y, z+1.
Hydrogen-bond geometry (Å, º) for (IV) top
D—H···AD—HH···AD···AD—H···A
N1—H1···O2i0.814 (16)2.517 (16)3.0806 (15)127.4 (14)
C14—H14···O1ii0.952.603.1827 (17)120
Symmetry codes: (i) x+1, y+1, z+1; (ii) x, y1, z.

Experimental details

(I)(II)(III)(IV)
Crystal data
Chemical formulaC25H22ClNO2C16H13BrN2O2C23H20N2O3C22H17ClN2O2
Mr403.89345.19372.41376.83
Crystal system, space groupOrthorhombic, PbcnMonoclinic, P21/cTriclinic, P1Triclinic, P1
Temperature (K)100100100100
a, b, c (Å)10.1558 (7), 12.1446 (9), 33.605 (2)9.7223 (7), 10.2804 (7), 13.9652 (10)9.7561 (7), 10.0258 (7), 10.8942 (8)9.5830 (7), 9.7555 (7), 10.2307 (7)
α, β, γ (°)90, 90, 9090, 91.238 (2), 90116.415 (5), 91.843 (4), 97.963 (4)79.546 (6), 77.966 (6), 87.455 (7)
V3)4144.8 (5)1395.48 (17)939.84 (12)919.87 (11)
Z8422
Radiation typeMo KαMo KαMo KαMo Kα
µ (mm1)0.212.950.090.23
Crystal size (mm)0.22 × 0.19 × 0.070.22 × 0.19 × 0.050.24 × 0.21 × 0.030.48 × 0.36 × 0.16
Data collection
DiffractometerRigaku Mercury CCD
diffractometer
Rigaku Mercury CCD
diffractometer
Rigaku Mercury CCD
diffractometer
Rigaku Mercury CCD
diffractometer
Absorption correctionMulti-scan
(SADABS; Sheldrick, 1996)
Multi-scan
(SADABS; Sheldrick, 1996)
Tmin, Tmax0.563, 0.8670.899, 0.965
No. of measured, independent and
observed [I > 2σ(I)] reflections
27690, 4720, 3714 14919, 3213, 2911 12625, 4305, 3782 13253, 4138, 3363
Rint0.0790.0420.0280.023
(sin θ/λ)max1)0.6480.6500.6500.649
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.053, 0.153, 1.05 0.040, 0.108, 1.07 0.035, 0.097, 1.06 0.031, 0.085, 1.06
No. of reflections4720321343054138
No. of parameters266193257247
H-atom treatmentH atoms treated by a mixture of independent and constrained refinementH atoms treated by a mixture of independent and constrained refinementH atoms treated by a mixture of independent and constrained refinementH atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å3)0.54, 0.241.26, 0.820.30, 0.220.27, 0.23

Computer programs: CrystalClear (Rigaku, 2012), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 2012), publCIF (Westrip, 2010).

 

Acknowledgements

We thank the EPSRC National Crystallography Service (University of Southampton) for the data collections and the EPSRC National Mass Spectrometry Service (University of Swansea) for the HRMS data. We thank John Low for carrying out the Cambridge Database survey.

References

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ISSN: 2056-9890
Volume 71| Part 6| June 2015| Pages 654-659
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