Buy article online - an online subscription or single-article purchase is required to access this article.
Download citation
Download citation
link to html
Crystal structure analysis of the title compound, C13H12ClNO, reveals three crystallographically independent mol­ecules in the asymmetric unit. The main conformational difference between these mol­ecules is the orientation of the phenyl rings with respect to the pyrrole rings. The coplanar arrangement of the aldehyde groups attached to the pyrrole rings influences the pyrrole-ring geometry. The C2-C3 and N1-C5 bonds are noticeably longer than the C4-C5 and N1-C2 bonds. Two independent mol­ecules of the title compound form dimers via intermolecular C-H...O hydrogen bonds [D...A = 3.400 (3) Å and D-H...A = 157°]. The perpendicular orientation of the phenyl and pyrrole rings of one independent mol­ecule and its symmetry-related mol­ecule allows C-H...[pi] interactions, with an H...centroid distance of 2.85 Å and a C-H...[pi] angle of 155°. The distances between the H atom and the pyrrole-ring atoms indicate that the C-H bond points towards one of the bonds in the pyrrole ring.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S0108270103009272/sk1632sup1.cif
Contains datablocks global, I

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S0108270103009272/sk1632Isup2.hkl
Contains datablock I

CCDC reference: 217137

Comment top

The substituted pyrrole ring, which is known to be an important unit in many kinds of useful π-electron systems (Evans, 1990; Yanai et al., 2000; Takeda et al., 2001), forms part of our research on substituted heterocyclic compounds (Jukić et al., 1999 & 2003). The synthesis of pyrrole rings has remained an extremely attractive domain in heterocyclic chemistry, as they constitute the core unit of many natural products (Fürstner et al., 2002) and serve as the building blocks for porphyrin synthesis (Dolušić et al., 2003; Guo et al., 2003; Naik et al., 2003). The present study forms part of our continuing interest in the synthesis, stereochemistry and structural analysis of N-aryl- and N-heteroaryl-2,5-dimethylpyrrole-3-carbaldehyde (Vorkapić-Furač et al., 1992) and in their usage as corrosion inhibitors of iron (Stupnišek-Lisac et al., 1988; Stupnišek-Lisac et al., 1992) or as synthetic plant growth factors (cytokinins; Bajrović et al., 1993).

The asymmetric unit of the title compound, (I), (Fig. 1) contains three crystallographically independent molecules, viz. A, B and C. The bond lengths in their pyrrole rings and attached aldehyde groups agree within standard uncertainties (Table 1), and the bond lengths in the rest of the molecules differ only slightly. The biggest conformational difference between these three molecules was observed in the orientation of the phenyl rings with respect to the pyrrole rings, the C2–N1–C9–C10 torsion angles being 92.4 (2), −82.9 (2) and −96.2 (2)°, respectively.

The aldehyde groups are coplanar with the pyrrole rings to which they are attached; the C4—C3—C6—O1 torsion angles are −4.0 (3), 0.7 (4) and −0.1 (4)°, respectively. A coplanar arrangement of the aldehyde groups allows the extension of the π conjugation of the ring over the carbonyl groups. The π-electron transfer is substantiated by the deviation of the pyrrole-ring geometry. The C2—C3 bond is slightly elongated compared with the average value for Csp2Csp2 bond distance in 1H-pyrroles (1.375 Å; Allen et al., 1987) and noticeably longer than the C4—C5 bond. Because of the C2—C3 and C4—C5 bond-length deviations, the N1—C5 bond is noticeably longer than the N1—C2 bond and the corresponding Csp2—N(3) bond distance in 1H-pyrroles (1.372 Å; Allen et al., 1987). The efficient π-systems spread from the pyrrole ring to the carbonyl group is confirmed by the shortening of the C3—C6 bond [Csp2—Csp2(conjugated) = 1.455 Å; Allen et al., 1987]. A survey the Cambridge Structural Database (Allen, 2002) revealed three structures that have an aldehyde group at the 3-position of the pyrrole ring (Conde et al., 1979; de la Figuera Gomez et al., 1985; Lokaj et al., 2001). In these structures, the pyrrole-ring geometry is significantly different because of the influence of the other ring substituents. The structure of (I) is the first example of an N-(o-chlorophenyl)-substituted pyrrole ring.

The sum of the angles around atom N1 is 360° (Table 1), assuming that the N atoms, whose lone electron pairs are included in the aromatic systems, posses an sp2 planar arrangement. Consequently, the pyrrole rings are planar, and the largest observed deviation from their mean planes is 0.006 (2) Å for atom C2 in molecule A. The phenyl rings are almost perpendicular to the pyrrole rings [the dihedral angles are 86.9 (1), 83.8 (1) and 85.7 (1)°] and thus are not favourably disposed for inter-ring conjugation. Furthermore, the pyrrole and phenyl rings of molecules A and C are almost parallel to each other, the dihedral angles being 6.4 (1) and 7.0 (1)°, respectively.

In the crystal structure, two independent molecules of (I) form dimers via intermolecular C4A—H4A···O1Bi hydrogen bonds [symmetry code (i): 1 − x, −y, 1 − z]. The D···A and H···A distances are 3.400 (3) and 2.53 Å, and the D–H···A angle is 157° (Fig. 2). We found molecules linked by such Cpyrrole—H···O(CH) hydrogen bonds in only one structure (Adams et al., 1986). Surprisingly, molecule C is completely isolated and does not participate in hydrogen bonding. Its shortest intermolecular contacts are H14C···O1Bi and H72C···O1Cii [symmetry codes (i): x, −1/2 − y, −1/2 + z; (ii): x, 1 + y, z], with distances of 2.62 and 2.63 Å, respectively. The phenyl and pyrrole rings of two neighbouring symmetry-related A molecules are perpendicularly oriented. Such molecular packing leads to C—H···π interaction between the phenyl H14A atom and the pyrrole ring, with an H···centroidi distance of 2.85 Å and C—H···π angle of 155° [symmetry code (i): 1 − x, −y, 1 − z]. In fact, the H14A···C4A distance [2.70 Å] is shorter than the distance between the H atom and the pyrrole ring centroid. The second shortest H···C contact is that to atom C5A [2.87 Å], and all other H···C distances are larger than 3.05 Å. According to these observations, the C—H bond points more in the directions of? the C4A—C5A bond of the pyrrole ring than the ring as a whole (centroid). These C—H···π interactions connect hydrogen-bonded dimers in the ac plane.

Experimental top

N-(o-Chlorophenyl)-2,5-dimethylpyrrole-3-carbaldehyde was prepared by condensation of hexane-2,5-dione with 2-chloroaniline and subsequent Vilsmeier–Haack formylation of the pyrrole ring (Vorkapić-Furač et al., 1989), according to the modified procedure given for the preparation of? pyrrole-2-carbaldehyde and N-methylpyrrole-2-carbaldehyde (Silverstein et al., 1955). Compound (I) was recrystallized twice from a methanol–water (50:50, v/v) mixture and obtained as yellow crystals (yield 89%, m.p. 333 K). The structure of the compound was confirmed by elemental analysis and IR, UV, NMR and electron impact spectra (Vorkapić-Furač et al., 1989). A single-crystal was obtained by slow evaporation at room temperature from a methanol–water solution (50:50, v/v).

Refinement top

H atoms attached to C6 atoms were found in a difference Fourier map and the coordinates and isotropic thermal parameters were refined freely. All other H atoms were included in calculated positions as riding atoms, with C—H distances of 0.96 Å for methyl H atoms and 0.93 Å for the remaining H atoms.

Computing details top

Data collection: COLLECT (Nonius, 2000); cell refinement: DENZO–SMN (Otwinowski & Minor, 1997); data reduction: DENZO–SMN (Otwinowski & Minor, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: PLATON (Spek, 2003); software used to prepare material for publication: SHELXL97 (Sheldrick, 1997).

Figures top
[Figure 1] Fig. 1. A view of (I), with the atom-numbering scheme. For clarity, only one of the three independent molecules from the asymmetric unit is presented. Displacement ellipsoids for non-H atoms have been drawn at the 20% probability level.
[Figure 2] Fig. 2. The crystal packing, viewed along the b axis. The three independent molecules are designated A, B and C. Intermolecular hydrogen bonds and C—H···π interactions are shown by dashed lines.
N-(2-chlorphenyl)-2,5-dimethylpyrrole-3-carbaldehyde top
Crystal data top
C13H12ClNOF(000) = 1464
Mr = 233.69Dx = 1.291 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybcCell parameters from 8586 reflections
a = 21.6815 (3) Åθ = 2.6–27.5°
b = 8.6127 (1) ŵ = 0.30 mm1
c = 19.7231 (2) ÅT = 293 K
β = 101.6257 (5)°Prismatic, yellow
V = 3607.46 (8) Å30.35 × 0.35 × 0.15 mm
Z = 12
Data collection top
Nonius KappaCCD area-detector
diffractometer
8109 independent reflections
Radiation source: fine-focus sealed tube5495 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.040
ϕ and ω scansθmax = 27.4°, θmin = 3.4°
Absorption correction: multi-scan
DENZO-SMN (Otwinowski & Minor, 1997)
h = 2827
Tmin = 0.902, Tmax = 0.957k = 1110
43063 measured reflectionsl = 2525
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)] = 0.056Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.159H atoms treated by a mixture of independent and constrained refinement
S = 1.02 w = 1/[σ2(Fo2) + (0.0706P)2 + 1.2178P]
where P = (Fo2 + 2Fc2)/3
8109 reflections(Δ/σ)max = 0.001
451 parametersΔρmax = 0.32 e Å3
0 restraintsΔρmin = 0.41 e Å3
Crystal data top
C13H12ClNOV = 3607.46 (8) Å3
Mr = 233.69Z = 12
Monoclinic, P21/cMo Kα radiation
a = 21.6815 (3) ŵ = 0.30 mm1
b = 8.6127 (1) ÅT = 293 K
c = 19.7231 (2) Å0.35 × 0.35 × 0.15 mm
β = 101.6257 (5)°
Data collection top
Nonius KappaCCD area-detector
diffractometer
8109 independent reflections
Absorption correction: multi-scan
DENZO-SMN (Otwinowski & Minor, 1997)
5495 reflections with I > 2σ(I)
Tmin = 0.902, Tmax = 0.957Rint = 0.040
43063 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0560 restraints
wR(F2) = 0.159H atoms treated by a mixture of independent and constrained refinement
S = 1.02Δρmax = 0.32 e Å3
8109 reflectionsΔρmin = 0.41 e Å3
451 parameters
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
Cl1A0.48046 (4)0.03988 (10)0.23429 (3)0.0950 (3)
N1A0.50037 (7)0.08243 (19)0.38620 (8)0.0482 (4)
O1A0.59812 (9)0.5316 (2)0.47022 (9)0.0806 (5)
C2A0.48663 (9)0.2348 (2)0.39532 (9)0.0492 (4)
C3A0.54292 (9)0.3074 (2)0.42339 (9)0.0496 (4)
C4A0.59147 (10)0.1946 (2)0.43005 (10)0.0543 (5)
H4A0.63410.21230.44730.065*
C5A0.56522 (9)0.0571 (2)0.40701 (10)0.0537 (5)
C6A0.54944 (12)0.4693 (3)0.44217 (11)0.0611 (5)
H6A0.5102 (10)0.530 (2)0.4324 (10)0.050 (5)*
C7A0.59278 (12)0.0999 (3)0.40252 (17)0.0862 (8)
H71A0.63740.09590.42020.129*
H72A0.58490.13300.35510.129*
H73A0.57390.17190.42940.129*
C8A0.42141 (11)0.2953 (3)0.37527 (14)0.0735 (7)
H81A0.42000.39990.39170.110*
H82A0.39360.23140.39540.110*
H83A0.40850.29370.32580.110*
C9A0.45597 (9)0.0349 (2)0.35823 (10)0.0486 (4)
C10A0.44351 (9)0.0687 (2)0.28825 (10)0.0530 (5)
C11A0.40221 (11)0.1862 (3)0.26169 (12)0.0675 (6)
H11A0.39490.21010.21480.081*
C12A0.37224 (11)0.2669 (3)0.30552 (15)0.0739 (7)
H12A0.34420.34590.28810.089*
C13A0.38311 (13)0.2325 (3)0.37480 (15)0.0836 (8)
H13A0.36180.28640.40390.100*
C14A0.42545 (12)0.1183 (3)0.40117 (12)0.0724 (7)
H14A0.43360.09710.44840.087*
Cl1B0.13764 (4)0.28273 (9)0.23515 (3)0.0901 (2)
N1B0.16587 (7)0.28089 (18)0.38869 (8)0.0462 (4)
O1B0.25930 (8)0.1717 (2)0.47523 (9)0.0802 (5)
C2B0.15079 (8)0.1295 (2)0.39870 (9)0.0460 (4)
C3B0.20599 (9)0.0551 (2)0.42895 (9)0.0486 (4)
C4B0.25548 (9)0.1668 (2)0.43633 (10)0.0553 (5)
H4B0.29770.14810.45510.066*
C5B0.23064 (9)0.3043 (2)0.41153 (10)0.0524 (5)
C6B0.21092 (12)0.1062 (3)0.44840 (11)0.0598 (5)
H6B0.1718 (10)0.164 (2)0.4390 (10)0.053 (6)*
C7B0.26008 (11)0.4580 (3)0.40400 (15)0.0759 (7)
H71B0.30370.45500.42630.114*
H72B0.23890.53680.42510.114*
H73B0.25650.48110.35580.114*
C8B0.08521 (10)0.0713 (3)0.37765 (12)0.0617 (5)
H81B0.05670.14540.39070.093*
H82B0.08130.02590.40020.093*
H83B0.07530.05690.32840.093*
C9B0.12261 (8)0.3977 (2)0.35786 (10)0.0487 (4)
C10B0.10606 (9)0.4111 (3)0.28617 (11)0.0585 (5)
C11B0.06506 (11)0.5247 (3)0.25593 (15)0.0768 (7)
H11B0.05450.53340.20800.092*
C12B0.04009 (11)0.6244 (3)0.29674 (19)0.0859 (9)
H12B0.01240.70130.27630.103*
C13B0.05515 (12)0.6134 (3)0.36765 (19)0.0835 (8)
H13B0.03730.68180.39470.100*
C14B0.09717 (11)0.4996 (3)0.39897 (14)0.0675 (6)
H14B0.10790.49230.44700.081*
Cl1C0.17611 (4)0.19303 (9)0.26527 (3)0.0955 (3)
N1C0.16827 (7)0.26199 (17)0.11563 (8)0.0481 (4)
O1C0.07458 (9)0.71643 (19)0.03145 (10)0.0893 (6)
C2C0.18305 (9)0.4155 (2)0.10940 (10)0.0486 (4)
C3C0.12867 (10)0.4890 (2)0.07585 (10)0.0501 (4)
C4C0.08000 (10)0.3756 (2)0.06230 (10)0.0556 (5)
H4C0.03850.39340.04040.067*
C5C0.10458 (9)0.2375 (2)0.08680 (11)0.0536 (5)
C6C0.12301 (13)0.6522 (3)0.05957 (12)0.0652 (6)
H6C0.1622 (11)0.711 (3)0.0724 (11)0.066 (7)*
C7C0.07460 (12)0.0827 (3)0.08900 (15)0.0814 (7)
H71C0.03240.08580.06230.122*
H72C0.09840.00600.07000.122*
H73C0.07360.05660.13610.122*
C8C0.24734 (11)0.4741 (3)0.13670 (14)0.0711 (6)
H81C0.27740.40960.12030.107*
H82C0.25080.57870.12110.107*
H83C0.25560.47200.18640.107*
C9C0.21133 (9)0.1422 (2)0.14413 (10)0.0496 (4)
C10C0.21797 (10)0.0969 (2)0.21261 (11)0.0566 (5)
C11C0.25785 (11)0.0235 (3)0.23908 (13)0.0700 (6)
H11C0.26160.05440.28490.084*
C12C0.29197 (11)0.0968 (3)0.19669 (15)0.0739 (7)
H12C0.31860.17850.21400.089*
C13C0.28730 (12)0.0515 (3)0.12993 (16)0.0772 (7)
H13C0.31150.10060.10230.093*
C14C0.24679 (11)0.0675 (3)0.10263 (13)0.0664 (6)
H14C0.24340.09730.05670.080*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Cl1A0.1319 (6)0.1074 (6)0.0542 (3)0.0403 (5)0.0389 (4)0.0091 (3)
N1A0.0496 (9)0.0494 (9)0.0451 (8)0.0045 (7)0.0085 (7)0.0010 (7)
O1A0.0899 (12)0.0714 (11)0.0765 (11)0.0241 (9)0.0072 (9)0.0160 (9)
C2A0.0552 (11)0.0519 (11)0.0418 (9)0.0031 (9)0.0126 (8)0.0047 (8)
C3A0.0593 (11)0.0522 (11)0.0373 (9)0.0082 (9)0.0097 (8)0.0005 (8)
C4A0.0516 (11)0.0610 (12)0.0481 (10)0.0083 (9)0.0052 (8)0.0046 (9)
C5A0.0506 (11)0.0554 (12)0.0528 (11)0.0002 (9)0.0051 (9)0.0064 (9)
C6A0.0732 (15)0.0601 (13)0.0504 (11)0.0079 (12)0.0131 (10)0.0062 (10)
C7A0.0655 (15)0.0616 (15)0.123 (2)0.0095 (12)0.0008 (14)0.0029 (15)
C8A0.0593 (13)0.0682 (15)0.0908 (17)0.0043 (11)0.0102 (12)0.0173 (13)
C9A0.0495 (10)0.0484 (10)0.0483 (10)0.0045 (8)0.0109 (8)0.0025 (8)
C10A0.0570 (11)0.0530 (11)0.0498 (10)0.0015 (9)0.0127 (9)0.0039 (9)
C11A0.0712 (14)0.0618 (13)0.0644 (13)0.0025 (11)0.0015 (11)0.0155 (11)
C12A0.0636 (14)0.0547 (13)0.0982 (19)0.0144 (11)0.0038 (13)0.0051 (13)
C13A0.0868 (18)0.0773 (17)0.0906 (19)0.0314 (14)0.0272 (14)0.0045 (15)
C14A0.0894 (17)0.0746 (15)0.0563 (12)0.0244 (13)0.0223 (12)0.0010 (11)
Cl1B0.1156 (6)0.0991 (5)0.0580 (3)0.0189 (4)0.0231 (3)0.0101 (3)
N1B0.0425 (8)0.0443 (8)0.0494 (8)0.0015 (6)0.0037 (6)0.0068 (7)
O1B0.0829 (11)0.0671 (10)0.0852 (11)0.0256 (9)0.0044 (9)0.0190 (9)
C2B0.0492 (10)0.0450 (10)0.0425 (9)0.0029 (8)0.0064 (8)0.0048 (8)
C3B0.0527 (11)0.0497 (11)0.0420 (9)0.0047 (9)0.0061 (8)0.0056 (8)
C4B0.0439 (10)0.0607 (12)0.0578 (11)0.0038 (9)0.0015 (9)0.0067 (10)
C5B0.0428 (10)0.0533 (11)0.0580 (11)0.0053 (8)0.0028 (8)0.0038 (9)
C6B0.0710 (14)0.0529 (12)0.0544 (12)0.0059 (11)0.0099 (10)0.0063 (10)
C7B0.0553 (13)0.0595 (14)0.107 (2)0.0132 (11)0.0028 (12)0.0106 (13)
C8B0.0549 (12)0.0551 (12)0.0708 (13)0.0080 (10)0.0022 (10)0.0096 (10)
C9B0.0402 (9)0.0444 (10)0.0599 (11)0.0028 (8)0.0063 (8)0.0103 (9)
C10B0.0500 (11)0.0571 (12)0.0662 (13)0.0017 (9)0.0063 (9)0.0165 (10)
C11B0.0612 (14)0.0717 (16)0.0895 (17)0.0040 (12)0.0039 (12)0.0311 (14)
C12B0.0541 (14)0.0587 (15)0.138 (3)0.0047 (11)0.0026 (15)0.0330 (17)
C13B0.0649 (15)0.0511 (13)0.141 (3)0.0034 (11)0.0350 (16)0.0002 (15)
C14B0.0668 (14)0.0534 (12)0.0846 (16)0.0030 (11)0.0210 (12)0.0010 (12)
Cl1C0.1282 (6)0.1010 (5)0.0663 (4)0.0374 (5)0.0415 (4)0.0145 (4)
N1C0.0542 (9)0.0388 (8)0.0518 (9)0.0008 (7)0.0116 (7)0.0053 (7)
O1C0.1110 (14)0.0551 (10)0.0895 (12)0.0281 (10)0.0093 (10)0.0030 (9)
C2C0.0574 (11)0.0394 (9)0.0494 (10)0.0027 (8)0.0115 (8)0.0010 (8)
C3C0.0626 (12)0.0422 (10)0.0454 (10)0.0055 (9)0.0103 (8)0.0006 (8)
C4C0.0532 (11)0.0573 (12)0.0552 (11)0.0032 (9)0.0088 (9)0.0012 (10)
C5C0.0549 (11)0.0489 (11)0.0571 (11)0.0043 (9)0.0117 (9)0.0018 (9)
C6C0.0872 (17)0.0461 (12)0.0585 (13)0.0063 (12)0.0060 (12)0.0009 (10)
C7C0.0771 (16)0.0630 (15)0.1010 (19)0.0215 (12)0.0106 (14)0.0061 (14)
C8C0.0665 (14)0.0513 (12)0.0907 (17)0.0094 (10)0.0042 (12)0.0034 (12)
C9C0.0529 (11)0.0380 (9)0.0591 (11)0.0001 (8)0.0146 (9)0.0067 (8)
C10C0.0622 (12)0.0486 (11)0.0600 (12)0.0029 (9)0.0144 (10)0.0068 (9)
C11C0.0731 (14)0.0558 (13)0.0768 (15)0.0015 (11)0.0047 (12)0.0185 (12)
C12C0.0656 (14)0.0458 (12)0.106 (2)0.0073 (10)0.0070 (13)0.0120 (13)
C13C0.0755 (16)0.0544 (13)0.109 (2)0.0141 (12)0.0350 (14)0.0001 (14)
C14C0.0816 (15)0.0533 (12)0.0705 (14)0.0076 (11)0.0299 (12)0.0051 (11)
Geometric parameters (Å, º) top
Cl1A—C10A1.730 (2)C7B—H73B0.96
N1A—C2A1.366 (2)C8B—H81B0.96
N1A—C5A1.400 (2)C8B—H82B0.96
N1A—C9A1.428 (2)C8B—H83B0.96
O1A—C6A1.214 (3)C9B—C14B1.383 (3)
C2A—C3A1.384 (3)C9B—C10B1.392 (3)
C2A—C8A1.484 (3)C10B—C11B1.375 (3)
C3A—C4A1.419 (3)C11B—C12B1.362 (4)
C3A—C6A1.442 (3)C11B—H11B0.93
C4A—C5A1.353 (3)C12B—C13B1.374 (4)
C4A—H4A0.93C12B—H12B0.93
C5A—C7A1.488 (3)C13B—C14B1.395 (4)
C6A—H6A0.98 (2)C13B—H13B0.93
C7A—H71A0.96C14B—H14B0.93
C7A—H72A0.96Cl1C—C10C1.723 (2)
C7A—H73A0.96N1C—C2C1.372 (2)
C8A—H81A0.96N1C—C5C1.399 (2)
C8A—H82A0.96N1C—C9C1.429 (2)
C8A—H83A0.96O1C—C6C1.217 (3)
C9A—C14A1.377 (3)C2C—C3C1.384 (3)
C9A—C10A1.383 (3)C2C—C8C1.478 (3)
C10A—C11A1.382 (3)C3C—C4C1.423 (3)
C11A—C12A1.371 (3)C3C—C6C1.441 (3)
C11A—H11A0.93C4C—C5C1.352 (3)
C12A—C13A1.372 (4)C4C—H4C0.93
C12A—H12A0.93C5C—C7C1.488 (3)
C13A—C14A1.374 (3)C6C—H6C0.98 (2)
C13A—H13A0.93C7C—H71C0.96
C14A—H14A0.93C7C—H72C0.96
Cl1B—C10B1.727 (2)C7C—H73C0.96
N1B—C2B1.368 (2)C8C—H81C0.96
N1B—C5B1.400 (2)C8C—H82C0.96
N1B—C9B1.425 (2)C8C—H83C0.96
O1B—C6B1.214 (3)C9C—C10C1.385 (3)
C2B—C3B1.382 (3)C9C—C14C1.389 (3)
C2B—C8B1.486 (3)C10C—C11C1.383 (3)
C3B—C4B1.426 (3)C11C—C12C1.376 (4)
C3B—C6B1.440 (3)C11C—H11C0.93
C4B—C5B1.351 (3)C12C—C13C1.357 (4)
C4B—H4B0.93C12C—H12C0.93
C5B—C7B1.490 (3)C13C—C14C1.386 (3)
C6B—H6B0.97 (2)C13C—H13C0.93
C7B—H71B0.96C14C—H14C0.93
C7B—H72B0.96
C2A—N1A—C5A110.13 (16)C2B—C8B—H81B109.5
C2A—N1A—C9A125.66 (16)C2B—C8B—H82B109.5
C5A—N1A—C9A124.20 (16)H81B—C8B—H82B109.5
N1A—C2A—C3A106.79 (17)C2B—C8B—H83B109.5
N1A—C2A—C8A121.59 (18)H81B—C8B—H83B109.5
C3A—C2A—C8A131.6 (2)H82B—C8B—H83B109.5
C2A—C3A—C4A107.79 (17)C14B—C9B—C10B119.44 (19)
C2A—C3A—C6A124.9 (2)C14B—C9B—N1B120.25 (18)
C4A—C3A—C6A127.3 (2)C10B—C9B—N1B120.31 (18)
C5A—C4A—C3A108.33 (18)C11B—C10B—C9B120.8 (2)
C5A—C4A—H4A125.8C11B—C10B—Cl1B120.04 (19)
C3A—C4A—H4A125.8C9B—C10B—Cl1B119.19 (15)
C4A—C5A—N1A106.95 (18)C12B—C11B—C10B119.5 (2)
C4A—C5A—C7A131.98 (19)C12B—C11B—H11B120.3
N1A—C5A—C7A121.06 (18)C10B—C11B—H11B120.3
O1A—C6A—C3A125.2 (2)C11B—C12B—C13B121.1 (2)
O1A—C6A—H6A119.5 (12)C11B—C12B—H12B119.4
C3A—C6A—H6A115.3 (12)C13B—C12B—H12B119.4
C5A—C7A—H71A109.5C12B—C13B—C14B120.0 (3)
C5A—C7A—H72A109.5C12B—C13B—H13B120.0
H71A—C7A—H72A109.5C14B—C13B—H13B120.0
C5A—C7A—H73A109.5C9B—C14B—C13B119.2 (2)
H71A—C7A—H73A109.5C9B—C14B—H14B120.4
H72A—C7A—H73A109.5C13B—C14B—H14B120.4
C2A—C8A—H81A109.5C2C—N1C—C5C109.75 (16)
C2A—C8A—H82A109.5C2C—N1C—C9C125.83 (16)
H81A—C8A—H82A109.5C5C—N1C—C9C124.36 (15)
C2A—C8A—H83A109.5N1C—C2C—C3C106.98 (17)
H81A—C8A—H83A109.5N1C—C2C—C8C121.10 (17)
H82A—C8A—H83A109.5C3C—C2C—C8C131.92 (18)
C14A—C9A—C10A118.86 (19)C2C—C3C—C4C107.68 (17)
C14A—C9A—N1A120.11 (17)C2C—C3C—C6C125.4 (2)
C10A—C9A—N1A121.02 (17)C4C—C3C—C6C126.9 (2)
C11A—C10A—C9A120.90 (19)C5C—C4C—C3C108.23 (18)
C11A—C10A—Cl1A120.49 (16)C5C—C4C—H4C125.9
C9A—C10A—Cl1A118.61 (15)C3C—C4C—H4C125.9
C12A—C11A—C10A119.0 (2)C4C—C5C—N1C107.36 (17)
C12A—C11A—H11A120.5C4C—C5C—C7C131.0 (2)
C10A—C11A—H11A120.5N1C—C5C—C7C121.62 (19)
C13A—C12A—C11A120.7 (2)O1C—C6C—C3C124.8 (2)
C13A—C12A—H12A119.7O1C—C6C—H6C120.7 (14)
C11A—C12A—H12A119.7C3C—C6C—H6C114.5 (14)
C12A—C13A—C14A120.0 (2)C5C—C7C—H71C109.5
C12A—C13A—H13A120.0C5C—C7C—H72C109.5
C14A—C13A—H13A120.0H71C—C7C—H72C109.5
C13A—C14A—C9A120.5 (2)C5C—C7C—H73C109.5
C13A—C14A—H14A119.7H71C—C7C—H73C109.5
C9A—C14A—H14A119.7H72C—C7C—H73C109.5
C2B—N1B—C5B110.12 (15)C2C—C8C—H81C109.5
C2B—N1B—C9B125.34 (15)C2C—C8C—H82C109.5
C5B—N1B—C9B124.51 (15)H81C—C8C—H82C109.5
N1B—C2B—C3B107.03 (16)C2C—C8C—H83C109.5
N1B—C2B—C8B121.60 (17)H81C—C8C—H83C109.5
C3B—C2B—C8B131.37 (18)H82C—C8C—H83C109.5
C2B—C3B—C4B107.43 (17)C10C—C9C—C14C118.91 (19)
C2B—C3B—C6B125.01 (19)C10C—C9C—N1C121.22 (17)
C4B—C3B—C6B127.56 (19)C14C—C9C—N1C119.87 (18)
C5B—C4B—C3B108.50 (17)C11C—C10C—C9C120.9 (2)
C5B—C4B—H4B125.7C11C—C10C—Cl1C119.85 (18)
C3B—C4B—H4B125.7C9C—C10C—Cl1C119.27 (15)
C4B—C5B—N1B106.91 (17)C12C—C11C—C10C119.1 (2)
C4B—C5B—C7B131.86 (18)C12C—C11C—H11C120.5
N1B—C5B—C7B121.19 (17)C10C—C11C—H11C120.5
O1B—C6B—C3B125.1 (2)C13C—C12C—C11C120.9 (2)
O1B—C6B—H6B119.5 (12)C13C—C12C—H12C119.6
C3B—C6B—H6B115.3 (12)C11C—C12C—H12C119.6
C5B—C7B—H71B109.5C12C—C13C—C14C120.5 (2)
C5B—C7B—H72B109.5C12C—C13C—H13C119.8
H71B—C7B—H72B109.5C14C—C13C—H13C119.8
C5B—C7B—H73B109.5C13C—C14C—C9C119.7 (2)
H71B—C7B—H73B109.5C13C—C14C—H14C120.1
H72B—C7B—H73B109.5C9C—C14C—H14C120.1
C5A—N1A—C2A—C3A1.1 (2)C4B—C3B—C6B—O1B0.7 (4)
C9A—N1A—C2A—C3A179.83 (16)C2B—N1B—C9B—C14B97.6 (2)
C5A—N1A—C2A—C8A177.97 (19)C5B—N1B—C9B—C14B84.1 (2)
C9A—N1A—C2A—C8A0.8 (3)C2B—N1B—C9B—C10B82.9 (2)
N1A—C2A—C3A—C4A0.9 (2)C5B—N1B—C9B—C10B95.3 (2)
C8A—C2A—C3A—C4A178.0 (2)C14B—C9B—C10B—C11B0.3 (3)
N1A—C2A—C3A—C6A178.97 (18)N1B—C9B—C10B—C11B179.10 (18)
C8A—C2A—C3A—C6A2.1 (3)C14B—C9B—C10B—Cl1B179.60 (16)
C2A—C3A—C4A—C5A0.4 (2)N1B—C9B—C10B—Cl1B1.0 (2)
C6A—C3A—C4A—C5A179.47 (19)C9B—C10B—C11B—C12B0.5 (3)
C3A—C4A—C5A—N1A0.3 (2)Cl1B—C10B—C11B—C12B179.47 (19)
C3A—C4A—C5A—C7A179.2 (2)C10B—C11B—C12B—C13B0.0 (4)
C2A—N1A—C5A—C4A0.8 (2)C11B—C12B—C13B—C14B0.7 (4)
C9A—N1A—C5A—C4A179.63 (16)C10B—C9B—C14B—C13B0.3 (3)
C2A—N1A—C5A—C7A179.9 (2)N1B—C9B—C14B—C13B179.71 (18)
C9A—N1A—C5A—C7A1.3 (3)C12B—C13B—C14B—C9B0.8 (4)
C2A—C3A—C6A—O1A175.8 (2)C5C—N1C—C2C—C3C0.6 (2)
C4A—C3A—C6A—O1A4.0 (3)C9C—N1C—C2C—C3C176.74 (17)
C2A—N1A—C9A—C14A88.6 (3)C5C—N1C—C2C—C8C179.01 (19)
C5A—N1A—C9A—C14A92.8 (3)C9C—N1C—C2C—C8C3.7 (3)
C2A—N1A—C9A—C10A92.4 (2)N1C—C2C—C3C—C4C0.5 (2)
C5A—N1A—C9A—C10A86.2 (2)C8C—C2C—C3C—C4C179.0 (2)
C14A—C9A—C10A—C11A1.4 (3)N1C—C2C—C3C—C6C179.12 (19)
N1A—C9A—C10A—C11A177.62 (19)C8C—C2C—C3C—C6C0.4 (4)
C14A—C9A—C10A—Cl1A178.34 (18)C2C—C3C—C4C—C5C0.2 (2)
N1A—C9A—C10A—Cl1A2.7 (3)C6C—C3C—C4C—C5C178.8 (2)
C9A—C10A—C11A—C12A1.7 (3)C3C—C4C—C5C—N1C0.1 (2)
Cl1A—C10A—C11A—C12A178.04 (18)C3C—C4C—C5C—C7C177.3 (2)
C10A—C11A—C12A—C13A0.3 (4)C2C—N1C—C5C—C4C0.4 (2)
C11A—C12A—C13A—C14A1.4 (4)C9C—N1C—C5C—C4C176.94 (17)
C12A—C13A—C14A—C9A1.7 (4)C2C—N1C—C5C—C7C177.2 (2)
C10A—C9A—C14A—C13A0.3 (4)C9C—N1C—C5C—C7C5.4 (3)
N1A—C9A—C14A—C13A179.3 (2)C2C—C3C—C6C—O1C178.2 (2)
C5B—N1B—C2B—C3B0.7 (2)C4C—C3C—C6C—O1C0.1 (4)
C9B—N1B—C2B—C3B179.16 (17)C2C—N1C—C9C—C10C96.2 (2)
C5B—N1B—C2B—C8B178.68 (18)C5C—N1C—C9C—C10C86.9 (2)
C9B—N1B—C2B—C8B0.2 (3)C2C—N1C—C9C—C14C84.7 (3)
N1B—C2B—C3B—C4B0.6 (2)C5C—N1C—C9C—C14C92.2 (2)
C8B—C2B—C3B—C4B178.7 (2)C14C—C9C—C10C—C11C1.8 (3)
N1B—C2B—C3B—C6B179.73 (18)N1C—C9C—C10C—C11C177.32 (19)
C8B—C2B—C3B—C6B1.0 (3)C14C—C9C—C10C—Cl1C177.90 (17)
C2B—C3B—C4B—C5B0.3 (2)N1C—C9C—C10C—Cl1C3.0 (3)
C6B—C3B—C4B—C5B179.9 (2)C9C—C10C—C11C—C12C1.1 (3)
C3B—C4B—C5B—N1B0.2 (2)Cl1C—C10C—C11C—C12C178.61 (18)
C3B—C4B—C5B—C7B177.6 (2)C10C—C11C—C12C—C13C0.6 (4)
C2B—N1B—C5B—C4B0.5 (2)C11C—C12C—C13C—C14C1.6 (4)
C9B—N1B—C5B—C4B179.01 (18)C12C—C13C—C14C—C9C0.8 (4)
C2B—N1B—C5B—C7B177.5 (2)C10C—C9C—C14C—C13C0.8 (3)
C9B—N1B—C5B—C7B0.9 (3)N1C—C9C—C14C—C13C178.28 (19)
C2B—C3B—C6B—O1B179.7 (2)

Experimental details

Crystal data
Chemical formulaC13H12ClNO
Mr233.69
Crystal system, space groupMonoclinic, P21/c
Temperature (K)293
a, b, c (Å)21.6815 (3), 8.6127 (1), 19.7231 (2)
β (°) 101.6257 (5)
V3)3607.46 (8)
Z12
Radiation typeMo Kα
µ (mm1)0.30
Crystal size (mm)0.35 × 0.35 × 0.15
Data collection
DiffractometerNonius KappaCCD area-detector
diffractometer
Absorption correctionMulti-scan
DENZO-SMN (Otwinowski & Minor, 1997)
Tmin, Tmax0.902, 0.957
No. of measured, independent and
observed [I > 2σ(I)] reflections
43063, 8109, 5495
Rint0.040
(sin θ/λ)max1)0.648
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.056, 0.159, 1.02
No. of reflections8109
No. of parameters451
H-atom treatmentH atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å3)0.32, 0.41

Computer programs: COLLECT (Nonius, 2000), DENZO–SMN (Otwinowski & Minor, 1997), SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), PLATON (Spek, 2003).

Selected geometric parameters (Å, º) top
N1A—C2A1.366 (2)C3B—C4B1.426 (3)
N1A—C5A1.400 (2)C3B—C6B1.440 (3)
O1A—C6A1.214 (3)C4B—C5B1.351 (3)
C2A—C3A1.384 (3)N1C—C2C1.372 (2)
C3A—C4A1.419 (3)N1C—C5C1.399 (2)
C3A—C6A1.442 (3)O1C—C6C1.217 (3)
C4A—C5A1.353 (3)C2C—C3C1.384 (3)
N1B—C2B1.368 (2)C3C—C4C1.423 (3)
N1B—C5B1.400 (2)C3C—C6C1.441 (3)
O1B—C6B1.214 (3)C4C—C5C1.352 (3)
C2B—C3B1.382 (3)
C2A—N1A—C5A110.13 (16)C5B—N1B—C9B124.51 (15)
C2A—N1A—C9A125.66 (16)C2C—N1C—C5C109.75 (16)
C5A—N1A—C9A124.20 (16)C2C—N1C—C9C125.83 (16)
C2B—N1B—C5B110.12 (15)C5C—N1C—C9C124.36 (15)
C2B—N1B—C9B125.34 (15)
 

Subscribe to Acta Crystallographica Section C: Structural Chemistry

The full text of this article is available to subscribers to the journal.

If you have already registered and are using a computer listed in your registration details, please email support@iucr.org for assistance.

Buy online

You may purchase this article in PDF and/or HTML formats. For purchasers in the European Community who do not have a VAT number, VAT will be added at the local rate. Payments to the IUCr are handled by WorldPay, who will accept payment by credit card in several currencies. To purchase the article, please complete the form below (fields marked * are required), and then click on `Continue'.
E-mail address* 
Repeat e-mail address* 
(for error checking) 

Format*   PDF (US $40)
   HTML (US $40)
   PDF+HTML (US $50)
In order for VAT to be shown for your country javascript needs to be enabled.

VAT number 
(non-UK EC countries only) 
Country* 
 

Terms and conditions of use
Contact us

Follow Acta Cryst. C
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds