research communications\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 71| Part 10| October 2015| Pages 1121-1124

A monoclinic polymorph of 4-(2H-1,3-benzodioxol-5-yl)-1-(4-methyl­phen­yl)-1H-pyrazol-5-amine

CROSSMARK_Color_square_no_text.svg

aDepartment of Physics, Bhavan's Sheth R. A. College of Science, Ahmedabad, Gujarat 380 001, India, bP. S. Science and H. D. Patel Arts College, S. V. Campus, Kadi, Gujarat 382 715, India, cDepartment of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People's Republic of China, dDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, and eCentre for Chemical Crystallography and Faculty of Science and Technology, Sunway University, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
*Correspondence e-mail: mmjotani@rediffmail.com, edward.tiekink@gmail.com

Edited by W. T. A. Harrison, University of Aberdeen, Scotland (Received 20 August 2015; accepted 26 August 2015; online 12 September 2015)

The title compound, C17H15N3O2, is a monoclinic polymorph (P21/c with Z′ = 1) of the previously reported triclinic (P-1 with Z′ = 2) form [Gajera et al. (2013[Gajera, N. N., Patel, M. C., Jotani, M. M. & Tiekink, E. R. T. (2013). Acta Cryst. E69, o736-o737.]). Acta Cryst. E69, o736–o737]. The mol­ecule in the monoclinic polymorph features a central pyrazolyl ring with an N-bound p-tolyl group and a C-bound 1,3-benzodioxolyl fused-ring system on either side of the C atom bearing the amino group. The dihedral angles between the central ring and the N- and C-bound rings are 50.06 (5) and 27.27 (5)°, respectively. The angle between the pendent rings is 77.31 (4)°, indicating the mol­ecule has a twisted conformation. The five-membered dioxolyl ring has an envelope conformation with the methyl­ene C atom being the flap. The relative disposition of the amino and dioxolyl substituents is syn. One of the independent mol­ecules in the triclinic form has a similar syn disposition but the other has an anti arrangement of these substituents. In the crystal structure of the monoclinic form, mol­ecules assemble into supra­molecular helical chains via amino–pyrazolyl N—H⋯N hydrogen bonds. These are linked into layers via C—H⋯π inter­actions, and layers stack along the a axis with no specific inter­actions between them.

1. Chemical context

It is the broad range of biological activities, such as anti-depressant, anti-anxiety, anti-fungal, anti-bacterial, anti-diabetic, anti-cancer, etc. (Tanitame et al., 2004[Tanitame, A., Oyamada, Y., Ofuji, K., Fujimoto, M., Iwai, N., Hiyama, Y., Suzuki, K., Ito, H., Terauchi, H., Kawasaki, M., Nagai, K., Wachi, M. & Yamagishi, J. (2004). J. Med. Chem. 47, 3693-3696.]; Chimenti et al., 2006[Chimenti, F., Bolasco, A., Manna, F., Secci, D., Chimenti, P., Granese, A., Befani, O., Turini, P., Cirilli, R., La Torre, F., Alcaro, S., Ortuso, F. & Langer, T. (2006). Curr. Med. Chem. 13, 1411-1428.]; Ding et al.,2009[Ding, X.-L., Zhang, H.-Y., Qi, L., Zhao, B.-X., Lian, S., Lv, H.-S. & Miao, J.-Y. (2009). Bioorg. Med. Chem. Lett. 19, 5325-5328.]; Shen et al., 2011[Shen, D.-M., Brady, E. J., Candelore, M. R., Dallas-Yang, Q., Ding, V. D.-H., Feeney, W. P., Jiang, G., McCann, M. E., Mock, S., Qureshi, S. A., Saperstein, R., Shen, X., Tong, X., Tota, L. M., Wright, M. J., Yang, X., Zheng, S., Chapman, K. T., Zhang, B. B., Tata, J. R. & Parmee, E. R. (2011). Bioorg. Med. Chem. Lett. 21, 76-81.]; Deng et al., 2012[Deng, H., Yu, Z., Shi, G., Chen, M., Tao, K. & Hou, T. (2012). Chem. Biol. Drug Des. 79, 279-289.]), that continues to inspire inter­est in compounds containing the amino-substituted pyrazole unit. It was in this context that the crystal structure of 4-(2H-1,3-benzodioxol-5-yl)-1-(4-methyl­phen­yl)-1H-pyrazol-5-amine (I)[link] was originally determined (Gajera et al., 2013[Gajera, N. N., Patel, M. C., Jotani, M. M. & Tiekink, E. R. T. (2013). Acta Cryst. E69, o736-o737.]). Subsequently, during scale up, crystals of the monoclinic form were isolated from recrystallization of (I)[link] from ethyl acetate, the same solvent system that afforded the original triclinic polymorph. Herein, the crystal and mol­ecular structures of the monoclinic form of (I)[link], hereafter (mI), are described and compared with the triclinic polymorph, (tI).

[Scheme 1]

2. Structural commentary

The mol­ecule in (mI), Fig. 1[link], comprises a central and almost planar pyrazolyl ring (r.m.s. deviation of the five atoms = 0.0043 Å) flanked by an N-bound p-tolyl group and a C-bound 1,3-benzodioxolyl fused ring system. In the latter, the five-membered dioxolyl ring adopts an envelope conformation with the methyl­ene-C17 atom being the flap; the C17 atom lies 0.318 (2) Å out of the least-squares plane defined by the O1, O2, C14 and C15 atoms (r.m.s. deviation = 0.0005 Å). The dihedral angles between the central ring and the N- and C-bound six-membered rings are 50.06 (5) and 27.27 (5)°, respectively. The dihedral angle between the six-membered rings is 77.31 (4)°, indicating an overall twisted arrangement. In general terms, the relative disposition of the amino and dioxolyl substituents may be described as being syn.

[Figure 1]
Figure 1
The mol­ecular structure of the mol­ecule found in the monoclinic polymorph showing the atom-labelling scheme and displacement ellipsoids at the 70% probability level.

While (mI) crystallizes with Z′ = 1, the triclinic polymorph, (tI), crystallizes with Z′ = 2 (Gajera et al., 2013[Gajera, N. N., Patel, M. C., Jotani, M. M. & Tiekink, E. R. T. (2013). Acta Cryst. E69, o736-o737.]). In the latter, the mol­ecules have quite different conformations. In one of the independent mol­ecules, the amino and dioxolyl substit­uents are syn, as for (mI), and in the other these substituents are anti. These differences in mol­ecular conformations are highlighted in Fig. 2[link]. The syn/anti distinction is quite clear from this overlap diagram where the dioxolyl ring obviously occupies a different position in the second independent mol­ecule of (tI, blue image). Also evident from Fig. 2[link] are variations in the relative dispositions of six-membered rings. These variations are qu­anti­fied in Table 1[link].

Table 1
Dihedral angle (°) data for the three independent mol­ecules in (mI) and (tI)

Structure pyrazol­yl/p-tol­yl pyrazol­yl/benzo-C6 p-tol­yl/benzo-C6
(mI) 50.06 (5) 27.27 (5) 77.31 (4)
(tI), mol­ecule a 49.08 (9) 47.18 (7) 85.22 (8)
(tI), mol­ecule b 68.22 (9) 31.67 (8) 80.63 (8)
[Figure 2]
Figure 2
Overlay diagram of the title compound, (mI), red image, with the two independent mol­ecules in (tI), green (mol­ecule a) and blue (b) images. The mol­ecules have been overlapped so that the central pyrazolyl rings are coincident.

3. PXRD study

In order to ascertain the nature of the crystalline residue isolated from recrystallization of (I)[link] from ethyl acetate solution, a powder X-ray diffraction (PXRD) experiment was performed on a PANalytical Empyrean XRD system with Cu Kα1 radiation (λ = 1.54056 Å) in the 2θ range of 5 to 50° with a step size of 0.026°. The pattern was analyzed with X'Pert HighScore Plus (PANalytical, 2009[PANalytical (2009). X'Pert HighScore Plus. PANalytical, B. V. Almelo, The Netherlands.]). This analysis indicated that the ratio of (mI) to (tI) in the overall sample was 49.1:50.9. This distribution suggests that effectively in the sample there is a 3:1 ratio of mol­ecules with a syn disposition of the amino and dioxolyl substituents to those with a trans arrangement.

4. Supra­molecular features

The most notable feature of the crystal packing in (mI) is the formation of supra­molecular helical chains aligned along the b axis and mediated by amino–pyrazolyl N—H⋯N hydrogen bonds, Fig. 3[link] and Table 2[link]. The chains are consolidated into layers in the bc plane by pyrazol­yl–tolyl C10—H⋯π and methyl­ene–benzo-C6 C17—H⋯π inter­actions, Table 2[link]. The layers inter-digitate along the a axis whereby the dioxolyl rings face each other, Fig. 4[link]. The C—H⋯O inter­actions are at distances beyond the standard criteria (Spek, 2009[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]). In the packing scheme just described, no specific role is found for the second amino-H2N atom. To a first approximation, the mode of association between mol­ecules in (tI) is similar in that supra­molecular chains are formed. These comprise alternating independent mol­ecules a and b that are connected by amino–pyrazolyl N—H⋯N hydrogen bonds. The difference is that in (tI), the chains have a zigzag topology. Chains in (tI) are connected by C—H⋯O and C—H⋯π inter­actions.

Table 2
Hydrogen-bond geometry (Å, °)

Cg1 and Cg2 are the centroids of the C2–C7 and C11–C16 rings, respectively.

D—H⋯A D—H H⋯A DA D—H⋯A
N3—H1N⋯N2i 0.88 (2) 2.16 (2) 2.9981 (16) 159 (1)
C10—H10⋯Cg1ii 0.95 2.97 3.6753 (14) 133
C17—H17BCg2iii 0.99 2.66 3.6334 (15) 169
Symmetry codes: (i) [-x+1, y-{\script{1\over 2}}, -z+{\script{3\over 2}}]; (ii) [-x+1, y+{\script{1\over 2}}, -z+{\script{3\over 2}}]; (iii) [x, -y+{\script{1\over 2}}, z-{\script{3\over 2}}].
[Figure 3]
Figure 3
A view of a supra­molecular helical chain aligned along the b axis and mediated by amino–pyrazolyl N—H⋯N hydrogen bonds shown as blue dashed lines.
[Figure 4]
Figure 4
Unit-cell contents shown in projection down the c axis. The N—H⋯N and C—H⋯π inter­actions are shown as blue and purple dashed lines, respectively.

5. Analysis of the Hirshfeld surfaces

In order to investigate further the nature of the crystal packing in (mI) and (tI), an analysis of the Hirshfeld surfaces (Spackman & Jayatilaka, 2009[Spackman, M. A. & Jayatilaka, D. (2009). CrystEngComm, 11, 19-32.]) was undertaken employing CrystalExplorer (Wolff et al., 2012[Wolff, S. K., Grimwood, D. J., McKinnon, J. J., Turner, M. J., Jayatilaka, D. & Spackman, M. A. (2012). CrystalExplorer. The University of Western Australia.]). The Hirshfeld surfaces were mapped over dnorm for each of the three mol­ecules, Fig. 5[link]. The points of contact corresponding to the amino–pyrazolyl N—H⋯N hydrogen bonds are recognized easily by deep-red depressions on the Hirshfeld surfaces of all three mol­ecules. The C—H⋯π inter­actions in (mI) are indicated by both diminutive spots and light-red regions on the surface. These are also apparent in (tI) with additional features arising from the C—H⋯O contacts, Fig. 5[link]. The fingerprint plots (Rohl et al., 2008[Rohl, A. L., Moret, M., Kaminsky, W., Claborn, K., McKinnon, J. J. & Kahr, B. (2008). Cryst. Growth Des. 8, 4517-4525.]) were also calculated and enabled a delineation of the relative contribution of the different inter­molecular contacts to the respective crystal structures. These contributions are illustrated graphically in Fig. 6[link]. Despite the different modes of association between the respective mol­ecules, to a first approximation the relative contributions to the surfaces are similar.

[Figure 5]
Figure 5
Views of the Hirshfeld surfaces for (a) (mI), (b) (tI) – mol­ecule a, and (c) (tI) – mol­ecule b.
[Figure 6]
Figure 6
Relative contributions of various inter­molecular contacts to the Hirshfeld surface area in (a) mI, and of (tI) mol­ecules (b) a and (c) b.

6. Database survey

A search of the Cambridge Structural Database (Groom & Allen, 2014[Groom, C. R. & Allen, F. H. (2014). Angew. Chem. Int. Ed. 53, 662-671.]), revealed there are no direct analogues of (I)[link], i.e. 1,3 N- and C-disubstituted species. There are four examples of 1,3,4 tris­ubstituted analogues (Abu Thaher et al., 2012[Abu Thaher, B., Koch, P., Schollmeyer, D. & Laufer, S. (2012). Acta Cryst. E68, o2603.]; and references therein).

7. Synthesis and crystallization

The title compound was synthesized according to the same synthetic process as described in the original report (Gajera et al., 2013[Gajera, N. N., Patel, M. C., Jotani, M. M. & Tiekink, E. R. T. (2013). Acta Cryst. E69, o736-o737.]). Single crystals suitable for X-ray measurements in the form of light-brown prisms were obtained from its ethyl acetate solution at room temperature.

8. Refinement

Crystal data, data collection and structure refinement details are summarized in Table 3[link]. Carbon-bound H-atoms were placed in calculated positions (C—H = 0.95–0.99 Å) and were included in the refinement in the riding model approximation, with Uiso(H) set to 1.2–1.5Ueq(C). The N-bound H atoms were located in a difference Fourier map but were refined with a distance restraint of N—H = 0.88±0.01 Å, and with Uiso(H) set to 1.2Ueq(N).

Table 3
Experimental details

Crystal data
Chemical formula C17H15N3O2
Mr 293.32
Crystal system, space group Monoclinic, P21/c
Temperature (K) 100
a, b, c (Å) 13.9652 (3), 10.6898 (2), 9.8459 (2)
β (°) 109.844 (2)
V3) 1382.57 (5)
Z 4
Radiation type Cu Kα
μ (mm−1) 0.77
Crystal size (mm) 0.35 × 0.25 × 0.15
 
Data collection
Diffractometer Agilent SuperNova Dual diffractometer with an Atlas detector
Absorption correction Multi-scan (CrysAlis PRO; Agilent, 2014[Agilent (2014). CrysAlis PRO. Agilent Technologies Inc., Santa Clara, CA, USA.])
Tmin, Tmax 0.989, 1.000
No. of measured, independent and observed [I > 2σ(I)] reflections 4379, 2582, 2289
Rint 0.013
(sin θ/λ)max−1) 0.609
 
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.036, 0.096, 1.03
No. of reflections 2582
No. of parameters 206
No. of restraints 2
H-atom treatment H atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å−3) 0.19, −0.27
Computer programs: CrysAlis PRO (Agilent, 2014[Agilent (2014). CrysAlis PRO. Agilent Technologies Inc., Santa Clara, CA, USA.]), SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]), SHELXL2014 (Sheldrick, 2015[Sheldrick, G. M. (2015). Acta Cryst. C71, 3-8.]), ORTEP-3 for Windows (Farrugia, 2012[Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.]), QMol (Gans & Shalloway, 2001[Gans, J. & Shalloway, D. (2001). J. Mol. Graphics Modell. 19, 557-559.]), DIAMOND (Brandenburg, 2006[Brandenburg, K. (2006). DIAMOND. Crystal Impact GbR, Bonn, Germany.]) and publCIF (Westrip, 2010[Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.]).

Supporting information


Chemical context top

It is the broad range of biological activities, such as anti-depressant, anti-anxiety, anti-fungal, anti-bacterial, anti-diabetic, anti-cancer, etc. (Tanitame et al., 2004; Chimenti et al., 2006; Ding et al.,2009; Shen et al., 2011; Deng et al., 2012), that continues to inspire inter­est in compounds containing the amino-substituted pyrazole unit. It was in this context that the crystal structure of 4-(2H-1,3-benzodioxol-5-yl)-1-(4-methyl­phenyl)-1H-pyrazol-5-amine (I) was originally determined (Gajera et al., 2013). Subsequently, during scale up, crystals of the monoclinic form were isolated from recrystallization of (I) from ethyl acetate, the same solvent system that afforded the original triclinic polymorph. Herein, the crystal and molecular structures of the monoclinic form of (I), hereafter (mI), are described and compared with the triclinic polymorph, (tI).

Structural commentary top

The molecule in (mI), Fig. 1, comprises a central and almost planar pyrazolyl ring (r.m.s. deviation of the five atoms = 0.0043 Å) flanked by an N-bound p-tolyl group and a C-bound 1,3-benzodioxolyl fused ring system. In the latter, the five-membered dioxolyl ring adopts an envelope conformation with the methyl­ene-C17 atom being the flap; the C17 atom lies 0.318 (2) Å out of the least-squares plane defined by the O1, O2, C14 and C15 atoms (r.m.s. deviation = 0.0005 Å). The dihedral angles between the central ring and the N- and C-bound six-membered rings are 50.06 (5) and 27.27 (5)°, respectively. The dihedral angle between the six-membered rings is 77.31 (4)°, indicating an overall twisted arrangement. In general terms, the relative disposition of the amino and dioxolyl substituents may be described as being syn.

While (mI) crystallizes with Z' = 1, the triclinic polymorph, (tI), crystallizes with Z' = 2 (Gajera et al., 2013). In the latter, the molecules have quite different conformations. In one of the independent molecules, the amino and dioxolyl substituents are syn, as for (mI), and in the other these substituents are anti. These differences in molecular conformations are highlighted in Fig. 2. The syn/anti distinction is quite clear from this overlap diagram where the dioxolyl ring obviously occupies a different position in the second independent molecule of (tI, blue image). Also evident from Fig. 2 are variations in the relative dispositions of six-membered rings. These variations are qu­anti­fied in Table 1.

PXRD study top

In order to ascertain the nature of the crystalline residue isolated from recrystallization of (I) from ethyl acetate solution, a powder X-ray diffraction (PXRD) experiment was performed on a PANalytical Empyrean XRD system with Cu Kα1 radiation (λ = 1.54056 Å) in the 2θ range of 5 to 50° with a step size of 0.026°. The pattern was analyzed with X'Pert HighScore Plus (PANalytical, 2009). This analysis indicated that the ratio of (mI) to (tI) in the overall sample was 49.1:50.9. This distribution suggests that effectively in the sample there is a 3:1 ratio of molecules with a syn disposition of the amino and dioxolyl substituents to those with a trans arrangement.

Supra­molecular features top

The most notable feature of the crystal packing in (mI) is the formation of supra­molecular helical chains aligned along the b axis and mediated by amino–pyrazolyl N—H···N hydrogen bonds, Fig. 3 and Table 2. The chains are consolidated into layers in the bc plane by pyrazolyl–tolyl C10—H···π and methyl­ene–benzo-C6 C17—H···π inter­actions, Table 2. The layers inter-digitate along the a axis whereby the dioxolyl rings face each other, Fig. 4. The C—H···O inter­actions are at distances beyond the standard criteria (Spek, 2009). In the packing scheme just described, no specific role is found for the second amino-H2N atom. To a first approximation, the mode of association between molecules in (tI) is similar in that supra­molecular chains are formed. These comprise alternating independent molecules a and b that are connected by amino–pyrazolyl N—H···N hydrogen bonds. The difference is that in (tI), the chains have a zigzag topology. Chains in (tI) are connected by C—H···O and C—H···π inter­actions.

Analysis of the Hirshfeld surfaces top

In order to investigate further the nature of the crystal packing in (mI) and (tI), an analysis of the Hirshfeld surfaces (Spackman & Jayatilaka, 2009) was undertaken employing CrystalExplorer (Wolff et al., 2012) . The Hirshfeld surfaces were mapped over dnorm for each of the three molecules, Fig. 5. The points of contact corresponding to the amino–pyrazolyl N—H···N hydrogen bonds are recognized easily by deep-red depressions on the Hirshfeld surfaces of all three molecules. The C—H···π inter­actions in (mI) are indicated by both diminutive spots and light-red regions on the surface. These are also apparent in (tI) with additional features arising from the C—H···O contacts, Fig. 5. The fingerprint plots (Rohl et al., 2008) were also calculated and enabled a delineation of the relative contribution of the different inter­molecular contacts to the respective crystal structures. These contributions are illustrated graphically in Fig. 6. Despite the different modes of association between the respective molecules, to a first approximation the relative contributions to the surfaces are similar.

Database survey top

A search of the Cambridge Structural Database (Groom & Allen, 2014), revealed there are no direct analogues of (I), i.e. 1,3 N- and C-disubstituted species. There are four examples of 1,3,4 tris­ubstituted analogues (Abu Thaher et al., 2012; and references therein).

Synthesis and crystallization top

The title compound was synthesized according to the same synthesis process as described in the original report (Gajera et al., 2013). Single crystals suitable for X-ray measurements in the form of light-brown prisms were obtained from its ethyl acetate solution at room temperature.

Refinement top

Crystal data, data collection and structure refinement details are summarized in Table 3. Carbon-bound H-atoms were placed in calculated positions (C—H = 0.95–0.99 Å) and were included in the refinement in the riding model approximation, with Uiso(H) set to 1.2–1.5Ueq(C). The N-bound H atoms were located in a difference Fourier map but were refined with a distance restraint of N—H = 0.88±0.01 Å, and with Uiso(H) set to 1.2Ueq(N).

Computing details top

Data collection: CrysAlis PRO (Agilent, 2014); cell refinement: CrysAlis PRO (Agilent, 2014); data reduction: CrysAlis PRO (Agilent, 2014); program(s) used to solve structure: SHELXL97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012), QMol (Gans & Shalloway, 2001) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).

Figures top
[Figure 1] Fig. 1. The molecular structure of the molecule found in the monoclinic polymorph showing the atom-labelling scheme and displacement ellipsoids at the 70% probability level.
[Figure 2] Fig. 2. Overlay diagram of the title compound, (mI), red image, with the two independent molecules in (tI), green (molecule a) and blue (b) images. The molecules have been overlapped so that the central pyrazolyl rings are coincident.
[Figure 3] Fig. 3. A view of a supramolecular helical chain aligned along the b axis and mediated by amino–pyrazolyl N—H···N hydrogen bonds shown as blue dashed lines.
[Figure 4] Fig. 4. Unit-cell contents shown in projection down the c axis. The N—H···N and C—H···π interactions are shown as blue and purple dashed lines, respectively.
[Figure 5] Fig. 5. Views of the Hirshfeld surfaces for (a) (mI), (b) (tI) – molecule a, and (c) (tI) – molecule b.
[Figure 6] Fig. 6. Relative contributions of various intermolecular contacts to the Hirshfeld surface area in (a) mI, and of (tI) molecules (b) a and (c) b.
4-(2H-1,3-Benzodioxol-5-yl)-1-(4-methylphenyl)-1H-pyrazol-5-amine top
Crystal data top
C17H15N3O2F(000) = 616
Mr = 293.32Dx = 1.409 Mg m3
Monoclinic, P21/cCu Kα radiation, λ = 1.54184 Å
a = 13.9652 (3) ÅCell parameters from 2900 reflections
b = 10.6898 (2) Åθ = 5.3–75.6°
c = 9.8459 (2) ŵ = 0.77 mm1
β = 109.844 (2)°T = 100 K
V = 1382.57 (5) Å3Prism, light-brown
Z = 40.35 × 0.25 × 0.15 mm
Data collection top
Agilent SuperNova Dual
diffractometer with an Atlas detector
2582 independent reflections
Radiation source: SuperNova (Cu) X-ray Source2289 reflections with I > 2σ(I)
Mirror monochromatorRint = 0.013
ω scansθmax = 70.0°, θmin = 5.3°
Absorption correction: multi-scan
(CrysAlis PRO; Agilent, 2014)
h = 1612
Tmin = 0.989, Tmax = 1.000k = 1212
4379 measured reflectionsl = 1111
Refinement top
Refinement on F22 restraints
Least-squares matrix: fullHydrogen site location: mixed
R[F2 > 2σ(F2)] = 0.036H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.096 w = 1/[σ2(Fo2) + (0.0527P)2 + 0.5203P]
where P = (Fo2 + 2Fc2)/3
S = 1.03(Δ/σ)max < 0.001
2582 reflectionsΔρmax = 0.19 e Å3
206 parametersΔρmin = 0.27 e Å3
Crystal data top
C17H15N3O2V = 1382.57 (5) Å3
Mr = 293.32Z = 4
Monoclinic, P21/cCu Kα radiation
a = 13.9652 (3) ŵ = 0.77 mm1
b = 10.6898 (2) ÅT = 100 K
c = 9.8459 (2) Å0.35 × 0.25 × 0.15 mm
β = 109.844 (2)°
Data collection top
Agilent SuperNova Dual
diffractometer with an Atlas detector
2582 independent reflections
Absorption correction: multi-scan
(CrysAlis PRO; Agilent, 2014)
2289 reflections with I > 2σ(I)
Tmin = 0.989, Tmax = 1.000Rint = 0.013
4379 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0362 restraints
wR(F2) = 0.096H atoms treated by a mixture of independent and constrained refinement
S = 1.03Δρmax = 0.19 e Å3
2582 reflectionsΔρmin = 0.27 e Å3
206 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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
O10.01538 (7)0.79537 (9)0.05812 (10)0.0229 (2)
O20.09248 (7)0.63677 (9)0.17958 (10)0.0229 (2)
N10.47346 (8)0.93081 (10)0.71284 (11)0.0146 (2)
N20.46867 (8)1.04737 (10)0.65038 (11)0.0168 (2)
N30.38155 (8)0.73744 (11)0.67648 (13)0.0229 (3)
H1N0.4302 (10)0.6978 (15)0.7442 (15)0.028*
H2N0.3203 (8)0.7054 (15)0.6459 (17)0.028*
C10.79815 (10)0.85389 (13)1.24901 (15)0.0226 (3)
H1A0.79640.92211.31470.034*
H1B0.86370.85471.23300.034*
H1C0.78960.77371.29170.034*
C20.71312 (10)0.87116 (12)1.10672 (14)0.0178 (3)
C30.73229 (9)0.91569 (12)0.98529 (14)0.0188 (3)
H30.80020.93470.99190.023*
C40.65366 (9)0.93269 (12)0.85479 (14)0.0173 (3)
H40.66790.96270.77280.021*
C50.55400 (9)0.90549 (11)0.84473 (13)0.0146 (3)
C60.53312 (9)0.86113 (11)0.96412 (13)0.0161 (3)
H60.46510.84270.95740.019*
C70.61276 (10)0.84398 (12)1.09371 (14)0.0174 (3)
H70.59840.81301.17520.021*
C80.39184 (9)0.85823 (12)0.63961 (13)0.0149 (3)
C90.33011 (9)0.93033 (12)0.52569 (13)0.0154 (3)
C100.38242 (10)1.04516 (12)0.54044 (13)0.0170 (3)
H100.35791.11410.47730.020*
C110.23592 (9)0.89631 (12)0.40828 (13)0.0157 (3)
C120.16893 (9)0.99103 (12)0.33479 (14)0.0180 (3)
H120.18281.07470.36830.022*
C130.08223 (10)0.96750 (13)0.21382 (14)0.0199 (3)
H130.03791.03280.16460.024*
C140.06491 (9)0.84515 (13)0.17031 (13)0.0177 (3)
C150.12917 (9)0.75009 (12)0.24281 (14)0.0170 (3)
C160.21486 (9)0.77116 (12)0.36133 (14)0.0169 (3)
H160.25800.70440.40950.020*
C170.01608 (10)0.66946 (14)0.04489 (14)0.0217 (3)
H17A0.04270.61180.02370.026*
H17B0.04420.66370.03470.026*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O10.0172 (4)0.0250 (5)0.0207 (5)0.0016 (4)0.0013 (4)0.0017 (4)
O20.0204 (5)0.0185 (5)0.0223 (5)0.0015 (4)0.0023 (4)0.0026 (4)
N10.0150 (5)0.0125 (5)0.0151 (5)0.0002 (4)0.0036 (4)0.0007 (4)
N20.0198 (5)0.0137 (5)0.0161 (5)0.0013 (4)0.0050 (4)0.0010 (4)
N30.0144 (5)0.0165 (6)0.0307 (7)0.0019 (4)0.0017 (5)0.0071 (5)
C10.0221 (7)0.0219 (7)0.0195 (7)0.0008 (5)0.0015 (5)0.0003 (5)
C20.0197 (6)0.0134 (6)0.0178 (6)0.0013 (5)0.0030 (5)0.0025 (5)
C30.0148 (6)0.0188 (6)0.0217 (7)0.0007 (5)0.0046 (5)0.0014 (5)
C40.0183 (6)0.0170 (6)0.0171 (6)0.0000 (5)0.0066 (5)0.0001 (5)
C50.0158 (6)0.0116 (6)0.0147 (6)0.0013 (4)0.0031 (5)0.0023 (5)
C60.0153 (6)0.0142 (6)0.0189 (6)0.0003 (5)0.0061 (5)0.0016 (5)
C70.0223 (6)0.0141 (6)0.0162 (6)0.0009 (5)0.0071 (5)0.0008 (5)
C80.0127 (6)0.0154 (6)0.0171 (6)0.0001 (4)0.0057 (5)0.0013 (5)
C90.0153 (6)0.0147 (6)0.0160 (6)0.0009 (5)0.0052 (5)0.0005 (5)
C100.0199 (6)0.0150 (6)0.0149 (6)0.0002 (5)0.0046 (5)0.0014 (5)
C110.0141 (6)0.0182 (6)0.0157 (6)0.0001 (5)0.0062 (5)0.0017 (5)
C120.0179 (6)0.0157 (6)0.0202 (6)0.0011 (5)0.0063 (5)0.0011 (5)
C130.0178 (6)0.0198 (7)0.0204 (7)0.0045 (5)0.0045 (5)0.0046 (5)
C140.0132 (6)0.0238 (7)0.0143 (6)0.0002 (5)0.0026 (5)0.0015 (5)
C150.0160 (6)0.0166 (6)0.0183 (6)0.0010 (5)0.0057 (5)0.0003 (5)
C160.0141 (6)0.0171 (6)0.0181 (6)0.0016 (5)0.0035 (5)0.0025 (5)
C170.0180 (6)0.0242 (7)0.0190 (6)0.0007 (5)0.0013 (5)0.0026 (5)
Geometric parameters (Å, º) top
O2—C151.3787 (16)C4—H40.9500
O2—C171.4347 (15)C5—C61.3872 (18)
O1—C141.3856 (15)C6—C71.3911 (17)
O1—C171.4354 (17)C6—H60.9500
N1—C81.3649 (16)C7—H70.9500
N1—N21.3810 (15)C8—C91.3925 (17)
N1—C51.4258 (15)C9—C101.4105 (17)
N2—C101.3183 (16)C9—C111.4719 (17)
N3—C81.3621 (17)C10—H100.9500
N3—H1N0.883 (9)C11—C121.4016 (18)
N3—H2N0.875 (9)C11—C161.4134 (18)
C1—C21.5091 (17)C12—C131.4032 (17)
C1—H1A0.9800C12—H120.9500
C1—H1B0.9800C13—C141.372 (2)
C1—H1C0.9800C13—H130.9500
C2—C71.3940 (19)C14—C151.3830 (18)
C2—C31.3946 (19)C15—C161.3771 (17)
C3—C41.3898 (17)C16—H160.9500
C3—H30.9500C17—H17A0.9900
C4—C51.3921 (18)C17—H17B0.9900
C15—O2—C17104.43 (10)N3—C8—N1122.88 (11)
C14—O1—C17104.05 (9)N3—C8—C9130.31 (12)
C8—N1—N2111.85 (10)N1—C8—C9106.77 (11)
C8—N1—C5129.22 (11)C8—C9—C10103.96 (11)
N2—N1—C5118.74 (10)C8—C9—C11129.77 (12)
C10—N2—N1104.01 (10)C10—C9—C11126.12 (11)
C8—N3—H1N122.2 (11)N2—C10—C9113.40 (11)
C8—N3—H2N117.3 (11)N2—C10—H10123.3
H1N—N3—H2N119.0 (16)C9—C10—H10123.3
C2—C1—H1A109.5C12—C11—C16119.12 (12)
C2—C1—H1B109.5C12—C11—C9119.26 (12)
H1A—C1—H1B109.5C16—C11—C9121.47 (11)
C2—C1—H1C109.5C11—C12—C13122.76 (12)
H1A—C1—H1C109.5C11—C12—H12118.6
H1B—C1—H1C109.5C13—C12—H12118.6
C7—C2—C3118.16 (12)C14—C13—C12116.48 (12)
C7—C2—C1120.64 (12)C14—C13—H13121.8
C3—C2—C1121.20 (12)C12—C13—H13121.8
C4—C3—C2121.06 (12)C13—C14—C15121.64 (12)
C4—C3—H3119.5C13—C14—O1128.63 (12)
C2—C3—H3119.5C15—C14—O1109.69 (12)
C3—C4—C5119.71 (12)C16—C15—O2127.53 (12)
C3—C4—H4120.1C16—C15—C14122.83 (12)
C5—C4—H4120.1O2—C15—C14109.63 (11)
C6—C5—C4120.25 (11)C15—C16—C11117.16 (11)
C6—C5—N1120.59 (11)C15—C16—H16121.4
C4—C5—N1119.06 (11)C11—C16—H16121.4
C5—C6—C7119.32 (11)O2—C17—O1107.40 (10)
C5—C6—H6120.3O2—C17—H17A110.2
C7—C6—H6120.3O1—C17—H17A110.2
C6—C7—C2121.51 (12)O2—C17—H17B110.2
C6—C7—H7119.2O1—C17—H17B110.2
C2—C7—H7119.2H17A—C17—H17B108.5
C8—N1—N2—C101.15 (13)C8—C9—C10—N20.51 (14)
C5—N1—N2—C10174.21 (10)C11—C9—C10—N2175.48 (11)
C7—C2—C3—C40.04 (19)C8—C9—C11—C12158.82 (13)
C1—C2—C3—C4179.34 (12)C10—C9—C11—C1226.24 (19)
C2—C3—C4—C50.3 (2)C8—C9—C11—C1625.6 (2)
C3—C4—C5—C60.26 (19)C10—C9—C11—C16149.34 (13)
C3—C4—C5—N1176.08 (11)C16—C11—C12—C131.36 (19)
C8—N1—C5—C647.97 (18)C9—C11—C12—C13174.33 (11)
N2—N1—C5—C6126.47 (12)C11—C12—C13—C140.57 (19)
C8—N1—C5—C4135.70 (13)C12—C13—C14—C150.53 (19)
N2—N1—C5—C449.86 (16)C12—C13—C14—O1178.07 (12)
C4—C5—C6—C70.10 (18)C17—O1—C14—C13168.94 (14)
N1—C5—C6—C7176.39 (11)C17—O1—C14—C1513.28 (14)
C5—C6—C7—C20.44 (19)C17—O2—C15—C16168.01 (13)
C3—C2—C7—C60.41 (19)C17—O2—C15—C1413.12 (14)
C1—C2—C7—C6178.98 (12)C13—C14—C15—C160.8 (2)
N2—N1—C8—N3177.01 (11)O1—C14—C15—C16178.81 (11)
C5—N1—C8—N38.2 (2)C13—C14—C15—O2178.09 (12)
N2—N1—C8—C90.87 (14)O1—C14—C15—O20.12 (15)
C5—N1—C8—C9173.88 (11)O2—C15—C16—C11178.70 (12)
N3—C8—C9—C10177.44 (13)C14—C15—C16—C110.03 (19)
N1—C8—C9—C100.23 (13)C12—C11—C16—C151.02 (18)
N3—C8—C9—C111.7 (2)C9—C11—C16—C15174.57 (11)
N1—C8—C9—C11176.01 (12)C15—O2—C17—O121.31 (13)
N1—N2—C10—C91.00 (14)C14—O1—C17—O221.29 (13)
Hydrogen-bond geometry (Å, º) top
Cg1 and Cg2 are the centroids of the C2–C7 and C11–C16 rings, respectively.
D—H···AD—HH···AD···AD—H···A
N3—H1N···N2i0.88 (2)2.16 (2)2.9981 (16)159 (1)
C10—H10···Cg1ii0.952.973.6753 (14)133
C17—H17B···Cg2iii0.992.663.6334 (15)169
Symmetry codes: (i) x+1, y1/2, z+3/2; (ii) x+1, y+1/2, z+3/2; (iii) x, y+1/2, z3/2.
Dihedral angle (°) data for the three independent molecules in (mI) and (tI) top
Structurepyrazolyl/p-tolylpyrazolyl/benzo-C6p-tolyl/benzo-C6
(mI)50.06 (5)27.27 (5)77.31 (4)
(tI), molecule a49.08 (9)47.18 (7)85.22 (8)
(tI), molecule b68.22 (9)31.67 (8)80.63 (8)
Hydrogen-bond geometry (Å, º) top
Cg1 and Cg2 are the centroids of the C2–C7 and C11–C16 rings, respectively.
D—H···AD—HH···AD···AD—H···A
N3—H1N···N2i0.882 (15)2.159 (15)2.9981 (16)158.6 (14)
C10—H10···Cg1ii0.952.973.6753 (14)133
C17—H17B···Cg2iii0.992.663.6334 (15)169
Symmetry codes: (i) x+1, y1/2, z+3/2; (ii) x+1, y+1/2, z+3/2; (iii) x, y+1/2, z3/2.

Experimental details

Crystal data
Chemical formulaC17H15N3O2
Mr293.32
Crystal system, space groupMonoclinic, P21/c
Temperature (K)100
a, b, c (Å)13.9652 (3), 10.6898 (2), 9.8459 (2)
β (°) 109.844 (2)
V3)1382.57 (5)
Z4
Radiation typeCu Kα
µ (mm1)0.77
Crystal size (mm)0.35 × 0.25 × 0.15
Data collection
DiffractometerAgilent SuperNova Dual
diffractometer with an Atlas detector
Absorption correctionMulti-scan
(CrysAlis PRO; Agilent, 2014)
Tmin, Tmax0.989, 1.000
No. of measured, independent and
observed [I > 2σ(I)] reflections
4379, 2582, 2289
Rint0.013
(sin θ/λ)max1)0.609
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.036, 0.096, 1.03
No. of reflections2582
No. of parameters206
No. of restraints2
H-atom treatmentH atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å3)0.19, 0.27

Computer programs: CrysAlis PRO (Agilent, 2014), SHELXL97 (Sheldrick, 2008), SHELXL2014 (Sheldrick, 2015), ORTEP-3 for Windows (Farrugia, 2012), QMol (Gans & Shalloway, 2001) and DIAMOND (Brandenburg, 2006), publCIF (Westrip, 2010).

 

Acknowledgements

The authors are thankful to the Department of Chemistry, The Hong Kong University of Science and Technology (HKUST), Hong Kong (People's Republic of China), for access to the X-ray diffraction facility during the IYCr2014 OpenLab. One of the authors, MMJ, is also thankful to Professor Ian D. Williams (HKUST) for useful discussions. We thank Mr Y. S. Tan (University of Malaya) for performing the PXRD analysis.

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Volume 71| Part 10| October 2015| Pages 1121-1124
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