Abstract
There are two independent molecules in the asymmetric unit of the title compound, C7H5ClN4, in which the tetrazole and benzene rings are twisted by dihedral angles of 12.9 (1) and 39.8 (1)°. In the crystal, the independent molecules are connected into a tetramer by C—H⋯N hydrogen bonds, generating an R 4 4(12) graph-set motif.
Related literature
For applications of tetrazoles in medicinal and synthetic chemistry, see: Butler (1996 ▶). For related structures, see: Baek et al. (2012 ▶); Matsunaga et al. (1999 ▶); Lyakhov et al. (2000 ▶, 2001 ▶). For the synthesis, see: Aridoss & Laali (2011 ▶).
Experimental
Crystal data
C7H5ClN4
M r = 180.60
Monoclinic,
a = 3.8626 (2) Å
b = 27.9946 (10) Å
c = 14.4943 (5) Å
β = 95.640 (3)°
V = 1559.71 (11) Å3
Z = 8
Mo Kα radiation
μ = 0.43 mm−1
T = 293 K
0.3 × 0.2 × 0.2 mm
Data collection
Oxford Diffraction Xcalibur Sapphire3 diffractometer
Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2010 ▶) T min = 0.795, T max = 0.917
16702 measured reflections
3366 independent reflections
2610 reflections with I > 2σ(I)
R int = 0.038
Refinement
R[F 2 > 2σ(F 2)] = 0.049
wR(F 2) = 0.101
S = 1.07
3366 reflections
217 parameters
H-atom parameters constrained
Δρmax = 0.18 e Å−3
Δρmin = −0.22 e Å−3
Data collection: CrysAlis PRO (Oxford Diffraction, 2010 ▶); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: PLATON (Spek, 2009 ▶); software used to prepare material for publication: PLATON.
Supplementary Material
Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S1600536812014353/is5104sup1.cif
Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536812014353/is5104Isup2.hkl
Supplementary material file. DOI: 10.1107/S1600536812014353/is5104Isup3.cml
Additional supplementary materials: crystallographic information; 3D view; checkCIF report
Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C1A—H1A⋯N1Bi | 0.93 | 2.54 | 3.454 (3) | 167 |
| C1B—H1B⋯N1Aii | 0.93 | 2.50 | 3.406 (3) | 163 |
Symmetry codes: (i)
; (ii)
.
Acknowledgments
YTJ is thankful for the support provided by the second stage of the BK-21 program. The authors thank the Director, USIC University of Jammu, Jammu Tawi, India, for the X-ray data collection.
supplementary crystallographic information
Comment
Heterocycles in general received much importance in recent years. Tetrazoles represent a unique class of heterocyclic compounds that exhibit a broad range of application both in medicinal and synthetic chemistry (Butler, 1996).
The title compound crystallizes in a monoclinic crystal system with two independent molecules in the asymmetric unit. Bond lengths and angles are comparable with the similar crystal structures (Baek et al., 2012; Lyakhov et al., 2000, 2001; Matsunaga et al., 1999). The tetrazole and benzene rings are planar but not coplanar with the dihedral angle being 12.9 (1) and 39.8 (1)°, respectively, for molecules A and B. Torsion angles C1A—N4A—C2A—C3A [165.7 (2)°] and C1B—N4B—C2B—C3B [-138.5 (3)°] indicate for the difference in the dihedral angle between the two rings in molecules A and B. The chlorine atoms in molecules A and B deviate 0.021 (3) and 0.009 (3) Å, respectively, from the benzene plane. The crystal packing is stabilized by C—H···N intermolecular interactions (Table 1), wherein atom C1 acts as donor to N1 generating an R44(12) graph-set motif.
Experimental
The title compound was synthesized from the known procedure (Aridoss & Laali, 2011). Fine white diffraction quality crystals were obtained by slow evaporation of its ethanol solution.
Refinement
All H-atoms were refined using a riding model, with C—H = 0.93 Å, and with Uiso(H) = 1.2Ueq(C).
Figures
Fig. 1.
The asymmetric unit of the title compound, showing 30% probability displacement ellipsoids.
Fig. 2.
A molecular packing diagram of the title compound, showing intermolecular interactions.
Crystal data
| C7H5ClN4 | F(000) = 736 |
| Mr = 180.60 | Dx = 1.538 Mg m−3 |
| Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
| Hall symbol: -P 2ybc | Cell parameters from 7146 reflections |
| a = 3.8626 (2) Å | θ = 3.6–29.0° |
| b = 27.9946 (10) Å | µ = 0.43 mm−1 |
| c = 14.4943 (5) Å | T = 293 K |
| β = 95.640 (3)° | Block, white |
| V = 1559.71 (11) Å3 | 0.3 × 0.2 × 0.2 mm |
| Z = 8 |
Data collection
| Oxford Diffraction Xcalibur Sapphire3 diffractometer | 3366 independent reflections |
| Radiation source: fine-focus sealed tube | 2610 reflections with I > 2σ(I) |
| Graphite monochromator | Rint = 0.038 |
| Detector resolution: 16.1049 pixels mm-1 | θmax = 27.0°, θmin = 3.6° |
| ω scans | h = −4→4 |
| Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2010) | k = −35→35 |
| Tmin = 0.795, Tmax = 0.917 | l = −18→18 |
| 16702 measured reflections |
Refinement
| Refinement on F2 | Primary atom site location: structure-invariant direct methods |
| Least-squares matrix: full | Secondary atom site location: difference Fourier map |
| R[F2 > 2σ(F2)] = 0.049 | Hydrogen site location: inferred from neighbouring sites |
| wR(F2) = 0.101 | H-atom parameters constrained |
| S = 1.07 | w = 1/[σ2(Fo2) + (0.030P)2 + 0.7614P] where P = (Fo2 + 2Fc2)/3 |
| 3366 reflections | (Δ/σ)max = 0.001 |
| 217 parameters | Δρmax = 0.18 e Å−3 |
| 0 restraints | Δρmin = −0.22 e Å−3 |
Special details
| 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)
| x | y | z | Uiso*/Ueq | ||
| C1A | 0.6813 (6) | 0.49499 (9) | 0.21942 (16) | 0.0471 (6) | |
| H1A | 0.7806 | 0.4769 | 0.1750 | 0.057* | |
| C2A | 0.8047 (5) | 0.44145 (7) | 0.35903 (15) | 0.0334 (5) | |
| C3A | 0.8223 (6) | 0.44243 (8) | 0.45455 (15) | 0.0406 (5) | |
| H3A | 0.7443 | 0.4691 | 0.4848 | 0.049* | |
| C4A | 0.9559 (6) | 0.40373 (8) | 0.50482 (16) | 0.0420 (5) | |
| H4A | 0.9670 | 0.4040 | 0.5692 | 0.050* | |
| C5A | 1.0728 (5) | 0.36472 (8) | 0.45945 (15) | 0.0373 (5) | |
| C6A | 1.0536 (6) | 0.36342 (8) | 0.36386 (16) | 0.0434 (5) | |
| H6A | 1.1318 | 0.3368 | 0.3338 | 0.052* | |
| C7A | 0.9169 (6) | 0.40214 (8) | 0.31318 (15) | 0.0424 (5) | |
| H7A | 0.9010 | 0.4016 | 0.2487 | 0.051* | |
| N1A | 0.5321 (6) | 0.53656 (7) | 0.20473 (15) | 0.0525 (5) | |
| N2A | 0.4223 (6) | 0.54976 (7) | 0.28770 (15) | 0.0561 (6) | |
| N3A | 0.5037 (6) | 0.51752 (7) | 0.34968 (14) | 0.0523 (5) | |
| N4A | 0.6693 (4) | 0.48236 (6) | 0.30800 (12) | 0.0368 (4) | |
| Cl1 | 1.24583 (17) | 0.31657 (2) | 0.52393 (4) | 0.05170 (18) | |
| C1B | 0.9963 (7) | 0.92383 (9) | 0.51988 (17) | 0.0507 (6) | |
| H1B | 1.1251 | 0.9410 | 0.5663 | 0.061* | |
| C2B | 1.0545 (6) | 0.84159 (8) | 0.58921 (15) | 0.0378 (5) | |
| C3B | 1.1628 (6) | 0.79776 (9) | 0.56058 (17) | 0.0481 (6) | |
| H3B | 1.1582 | 0.7909 | 0.4977 | 0.058* | |
| C4B | 1.2783 (6) | 0.76411 (9) | 0.62583 (18) | 0.0493 (6) | |
| H4B | 1.3517 | 0.7343 | 0.6073 | 0.059* | |
| C5B | 1.2846 (6) | 0.77494 (8) | 0.71897 (16) | 0.0410 (5) | |
| C6B | 1.1770 (6) | 0.81872 (8) | 0.74729 (16) | 0.0465 (6) | |
| H6B | 1.1841 | 0.8257 | 0.8102 | 0.056* | |
| C7B | 1.0581 (6) | 0.85244 (8) | 0.68223 (16) | 0.0429 (5) | |
| H7B | 0.9814 | 0.8821 | 0.7008 | 0.052* | |
| N1B | 0.8456 (6) | 0.94204 (9) | 0.44305 (16) | 0.0615 (6) | |
| N2B | 0.6892 (6) | 0.90440 (10) | 0.39623 (15) | 0.0644 (6) | |
| N3B | 0.7429 (6) | 0.86506 (9) | 0.44239 (15) | 0.0578 (6) | |
| N4B | 0.9373 (5) | 0.87688 (7) | 0.52159 (12) | 0.0418 (5) | |
| Cl2 | 1.43462 (19) | 0.73209 (2) | 0.80028 (5) | 0.0613 (2) |
Atomic displacement parameters (Å2)
| U11 | U22 | U33 | U12 | U13 | U23 | |
| C1A | 0.0595 (15) | 0.0454 (14) | 0.0359 (13) | 0.0024 (12) | 0.0023 (11) | −0.0014 (11) |
| C2A | 0.0320 (11) | 0.0354 (11) | 0.0327 (12) | −0.0031 (9) | 0.0031 (8) | −0.0017 (9) |
| C3A | 0.0485 (14) | 0.0385 (12) | 0.0355 (13) | 0.0007 (10) | 0.0082 (10) | −0.0075 (10) |
| C4A | 0.0502 (14) | 0.0453 (13) | 0.0305 (12) | −0.0030 (11) | 0.0048 (10) | −0.0025 (10) |
| C5A | 0.0346 (11) | 0.0389 (12) | 0.0384 (12) | −0.0026 (9) | 0.0028 (9) | 0.0003 (10) |
| C6A | 0.0500 (14) | 0.0402 (12) | 0.0406 (13) | 0.0049 (10) | 0.0080 (10) | −0.0065 (11) |
| C7A | 0.0512 (14) | 0.0474 (13) | 0.0290 (12) | 0.0029 (11) | 0.0059 (10) | −0.0050 (10) |
| N1A | 0.0636 (14) | 0.0467 (12) | 0.0455 (13) | 0.0026 (10) | −0.0029 (10) | 0.0016 (10) |
| N2A | 0.0685 (15) | 0.0482 (12) | 0.0507 (14) | 0.0092 (11) | 0.0021 (11) | 0.0003 (11) |
| N3A | 0.0667 (14) | 0.0457 (12) | 0.0454 (13) | 0.0135 (10) | 0.0098 (10) | −0.0020 (10) |
| N4A | 0.0395 (10) | 0.0353 (10) | 0.0354 (10) | −0.0021 (8) | 0.0030 (8) | −0.0035 (8) |
| Cl1 | 0.0571 (4) | 0.0493 (3) | 0.0477 (4) | 0.0085 (3) | 0.0000 (3) | 0.0054 (3) |
| C1B | 0.0543 (15) | 0.0572 (16) | 0.0404 (14) | −0.0027 (12) | 0.0032 (11) | 0.0054 (12) |
| C2B | 0.0355 (11) | 0.0440 (12) | 0.0341 (12) | −0.0057 (10) | 0.0050 (9) | −0.0016 (10) |
| C3B | 0.0568 (15) | 0.0546 (15) | 0.0341 (13) | −0.0037 (12) | 0.0101 (11) | −0.0107 (12) |
| C4B | 0.0551 (15) | 0.0434 (13) | 0.0504 (16) | 0.0031 (11) | 0.0100 (12) | −0.0081 (12) |
| C5B | 0.0358 (12) | 0.0426 (12) | 0.0442 (14) | −0.0030 (10) | 0.0027 (10) | 0.0035 (11) |
| C6B | 0.0565 (15) | 0.0508 (14) | 0.0320 (12) | 0.0020 (12) | 0.0033 (10) | −0.0053 (11) |
| C7B | 0.0506 (14) | 0.0416 (12) | 0.0369 (13) | 0.0048 (11) | 0.0059 (10) | −0.0060 (10) |
| N1B | 0.0652 (15) | 0.0721 (15) | 0.0469 (14) | 0.0012 (12) | 0.0039 (11) | 0.0161 (12) |
| N2B | 0.0654 (15) | 0.0881 (18) | 0.0385 (12) | 0.0015 (14) | −0.0006 (11) | 0.0108 (13) |
| N3B | 0.0596 (14) | 0.0760 (16) | 0.0356 (12) | −0.0056 (12) | −0.0065 (10) | −0.0005 (11) |
| N4B | 0.0410 (11) | 0.0525 (12) | 0.0316 (11) | −0.0038 (9) | 0.0027 (8) | 0.0008 (9) |
| Cl2 | 0.0659 (4) | 0.0552 (4) | 0.0607 (4) | 0.0056 (3) | −0.0037 (3) | 0.0109 (3) |
Geometric parameters (Å, º)
| C1A—N1A | 1.307 (3) | C1B—N1B | 1.308 (3) |
| C1A—N4A | 1.337 (3) | C1B—N4B | 1.335 (3) |
| C1A—H1A | 0.9300 | C1B—H1B | 0.9300 |
| C2A—C7A | 1.377 (3) | C2B—C3B | 1.374 (3) |
| C2A—C3A | 1.380 (3) | C2B—C7B | 1.381 (3) |
| C2A—N4A | 1.434 (3) | C2B—N4B | 1.433 (3) |
| C3A—C4A | 1.378 (3) | C3B—C4B | 1.378 (3) |
| C3A—H3A | 0.9300 | C3B—H3B | 0.9300 |
| C4A—C5A | 1.374 (3) | C4B—C5B | 1.381 (3) |
| C4A—H4A | 0.9300 | C4B—H4B | 0.9300 |
| C5A—C6A | 1.381 (3) | C5B—C6B | 1.370 (3) |
| C5A—Cl1 | 1.736 (2) | C5B—Cl2 | 1.741 (2) |
| C6A—C7A | 1.385 (3) | C6B—C7B | 1.381 (3) |
| C6A—H6A | 0.9300 | C6B—H6B | 0.9300 |
| C7A—H7A | 0.9300 | C7B—H7B | 0.9300 |
| N1A—N2A | 1.365 (3) | N1B—N2B | 1.362 (3) |
| N2A—N3A | 1.290 (3) | N2B—N3B | 1.295 (3) |
| N3A—N4A | 1.349 (2) | N3B—N4B | 1.350 (3) |
| N1A—C1A—N4A | 109.6 (2) | N1B—C1B—N4B | 109.7 (2) |
| N1A—C1A—H1A | 125.2 | N1B—C1B—H1B | 125.2 |
| N4A—C1A—H1A | 125.2 | N4B—C1B—H1B | 125.2 |
| C7A—C2A—C3A | 120.9 (2) | C3B—C2B—C7B | 121.2 (2) |
| C7A—C2A—N4A | 120.34 (19) | C3B—C2B—N4B | 119.6 (2) |
| C3A—C2A—N4A | 118.77 (19) | C7B—C2B—N4B | 119.2 (2) |
| C4A—C3A—C2A | 119.6 (2) | C2B—C3B—C4B | 119.4 (2) |
| C4A—C3A—H3A | 120.2 | C2B—C3B—H3B | 120.3 |
| C2A—C3A—H3A | 120.2 | C4B—C3B—H3B | 120.3 |
| C5A—C4A—C3A | 119.7 (2) | C3B—C4B—C5B | 119.6 (2) |
| C5A—C4A—H4A | 120.1 | C3B—C4B—H4B | 120.2 |
| C3A—C4A—H4A | 120.1 | C5B—C4B—H4B | 120.2 |
| C4A—C5A—C6A | 120.9 (2) | C6B—C5B—C4B | 120.8 (2) |
| C4A—C5A—Cl1 | 119.12 (17) | C6B—C5B—Cl2 | 120.29 (19) |
| C6A—C5A—Cl1 | 119.99 (17) | C4B—C5B—Cl2 | 118.89 (18) |
| C5A—C6A—C7A | 119.5 (2) | C5B—C6B—C7B | 119.8 (2) |
| C5A—C6A—H6A | 120.3 | C5B—C6B—H6B | 120.1 |
| C7A—C6A—H6A | 120.3 | C7B—C6B—H6B | 120.1 |
| C2A—C7A—C6A | 119.4 (2) | C6B—C7B—C2B | 119.2 (2) |
| C2A—C7A—H7A | 120.3 | C6B—C7B—H7B | 120.4 |
| C6A—C7A—H7A | 120.3 | C2B—C7B—H7B | 120.4 |
| C1A—N1A—N2A | 105.5 (2) | C1B—N1B—N2B | 105.2 (2) |
| N3A—N2A—N1A | 110.40 (19) | N3B—N2B—N1B | 111.1 (2) |
| N2A—N3A—N4A | 107.00 (19) | N2B—N3B—N4B | 106.2 (2) |
| C1A—N4A—N3A | 107.45 (18) | C1B—N4B—N3B | 107.9 (2) |
| C1A—N4A—C2A | 131.41 (19) | C1B—N4B—C2B | 130.4 (2) |
| N3A—N4A—C2A | 121.11 (18) | N3B—N4B—C2B | 121.6 (2) |
| C7A—C2A—C3A—C4A | 0.4 (3) | C7B—C2B—C3B—C4B | −0.3 (4) |
| N4A—C2A—C3A—C4A | −179.11 (19) | N4B—C2B—C3B—C4B | 179.4 (2) |
| C2A—C3A—C4A—C5A | 0.5 (3) | C2B—C3B—C4B—C5B | −0.2 (4) |
| C3A—C4A—C5A—C6A | −0.9 (3) | C3B—C4B—C5B—C6B | 0.0 (4) |
| C3A—C4A—C5A—Cl1 | 179.15 (17) | C3B—C4B—C5B—Cl2 | −179.50 (18) |
| C4A—C5A—C6A—C7A | 0.5 (3) | C4B—C5B—C6B—C7B | 0.5 (4) |
| Cl1—C5A—C6A—C7A | −179.63 (17) | Cl2—C5B—C6B—C7B | −179.93 (18) |
| C3A—C2A—C7A—C6A | −0.9 (3) | C5B—C6B—C7B—C2B | −0.9 (4) |
| N4A—C2A—C7A—C6A | 178.63 (19) | C3B—C2B—C7B—C6B | 0.8 (3) |
| C5A—C6A—C7A—C2A | 0.5 (3) | N4B—C2B—C7B—C6B | −178.8 (2) |
| N4A—C1A—N1A—N2A | −0.4 (3) | N4B—C1B—N1B—N2B | −0.1 (3) |
| C1A—N1A—N2A—N3A | 0.3 (3) | C1B—N1B—N2B—N3B | −0.1 (3) |
| N1A—N2A—N3A—N4A | 0.0 (3) | N1B—N2B—N3B—N4B | 0.3 (3) |
| N1A—C1A—N4A—N3A | 0.4 (3) | N1B—C1B—N4B—N3B | 0.3 (3) |
| N1A—C1A—N4A—C2A | −177.6 (2) | N1B—C1B—N4B—C2B | 178.2 (2) |
| N2A—N3A—N4A—C1A | −0.2 (3) | N2B—N3B—N4B—C1B | −0.4 (3) |
| N2A—N3A—N4A—C2A | 178.05 (19) | N2B—N3B—N4B—C2B | −178.4 (2) |
| C7A—C2A—N4A—C1A | −13.8 (3) | C3B—C2B—N4B—C1B | −138.5 (3) |
| C3A—C2A—N4A—C1A | 165.7 (2) | C7B—C2B—N4B—C1B | 41.1 (3) |
| C7A—C2A—N4A—N3A | 168.4 (2) | C3B—C2B—N4B—N3B | 39.1 (3) |
| C3A—C2A—N4A—N3A | −12.0 (3) | C7B—C2B—N4B—N3B | −141.3 (2) |
Hydrogen-bond geometry (Å, º)
| D—H···A | D—H | H···A | D···A | D—H···A |
| C1A—H1A···N1Bi | 0.93 | 2.54 | 3.454 (3) | 167 |
| C1B—H1B···N1Aii | 0.93 | 2.50 | 3.406 (3) | 163 |
Symmetry codes: (i) −x+2, y−1/2, −z+1/2; (ii) x+1, −y+3/2, z+1/2.
Footnotes
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: IS5104).
References
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Associated Data
This section collects any data citations, data availability statements, or supplementary materials included in this article.
Supplementary Materials
Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S1600536812014353/is5104sup1.cif
Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536812014353/is5104Isup2.hkl
Supplementary material file. DOI: 10.1107/S1600536812014353/is5104Isup3.cml
Additional supplementary materials: crystallographic information; 3D view; checkCIF report


