organic compounds
H-pyrazol-1-yl)-1H-1,2,4-triazole-5(4H)-thione
of 4-amino-3-(3-methyl-5-phenyl-1aDepartment of Chemistry, Tulane University, New Orleans, LA 70118, USA, bFaculty of Science & Engineering, School of Healthcare Science, Manchester Metropolitan University, Manchester M1 5GD, England, cChemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt, dDepartment of Physics, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey, and eKirkuk University, College of Education, Department of Chemistry, Kirkuk, Iraq
*Correspondence e-mail: shaabankamel@yahoo.com
In the title compound, C12H12N6S, the dihedral angles between the central pyrazole ring and the pendant triazole and benzene rings are 68.01 (4) and 59.83 (9)°, respectively. In the crystal, molecules are linked by N—H⋯N and N—H⋯S hydrogen bonds, generating (10-1) sheets.
Keywords: crystal structure; aminotriazoles; hydrogen bonding.
CCDC reference: 1401505
1. Related literature
For the bio-activities of aminotriazoles, see: Jin et al. (2007); Joung et al. (2000). For aminotriazoles as block-building synthons, see: Curtis (2004).
2. Experimental
2.1. Crystal data
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2.3. Refinement
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Data collection: APEX2 (Bruker, 2014); cell SAINT (Bruker, 2014); data reduction: SAINT; program(s) used to solve structure: SHELXT (Sheldrick, 2015a); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015b); molecular graphics: DIAMOND (Brandenburg & Putz, 2012); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).
Supporting information
CCDC reference: 1401505
10.1107/S205698901500938X/hb7427sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S205698901500938X/hb7427Isup2.hkl
Supporting information file. DOI: 10.1107/S205698901500938X/hb7427Isup3.cml
A mixture of 1 mmol (258 mg) of 5-(3-methyl-5-phenyl-1H-pyrazol-1-yl)-1,3,4-oxadiazole-2(3H)-thione and 2 ml of hydrazine in 30 ml ethanol was heated at 351 K for 6 h. On cooling, the solid product was filtered off, dried under vacuum and recrystallized from ethanol to afford colorless blocks of the title compound.
H-atoms attached to carbon were placed in calculated positions (C—H = 0.95 - 0.98 Å) while those attached to nitrogen were placed in locations derived from a difference map and their parameters adjusted to give N—H = 0.91 Å. All were included as riding contributions with isotropic displacement parameters 1.2 - 1.5 times those of the attached atoms.
Data collection: APEX2 (Bruker, 2014); cell
SAINT (Bruker, 2014); data reduction: SAINT (Bruker, 2014); program(s) used to solve structure: SHELXT (Sheldrick, 2015a); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015b); molecular graphics: DIAMOND (Brandenburg & Putz, 2012); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C12H12N6S | F(000) = 568 |
Mr = 272.34 | Dx = 1.303 Mg m−3 |
Monoclinic, P21/n | Cu Kα radiation, λ = 1.54178 Å |
a = 11.3278 (4) Å | Cell parameters from 8668 reflections |
b = 8.3970 (3) Å | θ = 4.3–72.3° |
c = 15.4427 (5) Å | µ = 2.04 mm−1 |
β = 109.053 (1)° | T = 150 K |
V = 1388.43 (8) Å3 | Block, colourless |
Z = 4 | 0.24 × 0.18 × 0.10 mm |
Bruker D8 VENTURE PHOTON 100 CMOS diffractometer | 2683 independent reflections |
Radiation source: INCOATEC IµS micro-focus source | 2515 reflections with I > 2σ(I) |
Mirror monochromator | Rint = 0.021 |
Detector resolution: 10.4167 pixels mm-1 | θmax = 72.3°, θmin = 4.2° |
ω scans | h = −13→13 |
Absorption correction: multi-scan (SADABS; Bruker, 2014) | k = −9→10 |
Tmin = 0.77, Tmax = 0.82 | l = −19→19 |
10355 measured reflections |
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)] = 0.036 | Hydrogen site location: mixed |
wR(F2) = 0.102 | H-atom parameters constrained |
S = 1.09 | w = 1/[σ2(Fo2) + (0.0581P)2 + 0.5187P] where P = (Fo2 + 2Fc2)/3 |
2683 reflections | (Δ/σ)max = 0.002 |
173 parameters | Δρmax = 0.36 e Å−3 |
0 restraints | Δρmin = −0.28 e Å−3 |
C12H12N6S | V = 1388.43 (8) Å3 |
Mr = 272.34 | Z = 4 |
Monoclinic, P21/n | Cu Kα radiation |
a = 11.3278 (4) Å | µ = 2.04 mm−1 |
b = 8.3970 (3) Å | T = 150 K |
c = 15.4427 (5) Å | 0.24 × 0.18 × 0.10 mm |
β = 109.053 (1)° |
Bruker D8 VENTURE PHOTON 100 CMOS diffractometer | 2683 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2014) | 2515 reflections with I > 2σ(I) |
Tmin = 0.77, Tmax = 0.82 | Rint = 0.021 |
10355 measured reflections |
R[F2 > 2σ(F2)] = 0.036 | 0 restraints |
wR(F2) = 0.102 | H-atom parameters constrained |
S = 1.09 | Δρmax = 0.36 e Å−3 |
2683 reflections | Δρmin = −0.28 e Å−3 |
173 parameters |
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. H-atoms attached to carbon were placed in calculated positions (C—H = 0.95 - 0.98 Å) while those attached to nitrogen were placed in locations derived from a difference map and their parameters adjusted to give N—H = 0.91 Å. All were included as riding contributions with isotropic displacement parameters 1.2 - 1.5 times those of the attached atoms. |
x | y | z | Uiso*/Ueq | ||
S1 | 1.06212 (3) | 0.49379 (4) | 0.36297 (2) | 0.02864 (14) | |
N1 | 0.52909 (11) | 0.54447 (14) | 0.29113 (8) | 0.0249 (3) | |
N2 | 0.60148 (11) | 0.41615 (13) | 0.33081 (8) | 0.0235 (3) | |
N3 | 0.86566 (11) | 0.29657 (15) | 0.28254 (8) | 0.0263 (3) | |
H3A | 0.9039 | 0.2256 | 0.2559 | 0.032* | |
N4 | 0.74091 (11) | 0.27516 (15) | 0.27154 (9) | 0.0273 (3) | |
N5 | 0.81912 (11) | 0.48358 (13) | 0.35855 (8) | 0.0205 (3) | |
N6 | 0.81859 (11) | 0.61690 (14) | 0.41236 (8) | 0.0262 (3) | |
H6A | 0.8704 | 0.5948 | 0.4699 | 0.031* | |
H6B | 0.8512 | 0.6973 | 0.3878 | 0.031* | |
C1 | 0.60875 (14) | 0.17810 (17) | 0.42641 (9) | 0.0251 (3) | |
C2 | 0.72215 (17) | 0.1972 (2) | 0.49645 (11) | 0.0399 (4) | |
H2 | 0.7559 | 0.3009 | 0.5120 | 0.048* | |
C3 | 0.78631 (19) | 0.0666 (2) | 0.54370 (13) | 0.0469 (5) | |
H3 | 0.8636 | 0.0807 | 0.5914 | 0.056* | |
C4 | 0.73738 (18) | −0.0845 (2) | 0.52122 (12) | 0.0392 (4) | |
H4 | 0.7808 | −0.1744 | 0.5538 | 0.047* | |
C5 | 0.62567 (16) | −0.10472 (18) | 0.45161 (11) | 0.0344 (4) | |
H5 | 0.5927 | −0.2088 | 0.4362 | 0.041* | |
C6 | 0.56078 (15) | 0.02533 (18) | 0.40384 (11) | 0.0292 (3) | |
H6 | 0.4839 | 0.0102 | 0.3559 | 0.035* | |
C7 | 0.54349 (13) | 0.31865 (17) | 0.37531 (9) | 0.0239 (3) | |
C8 | 0.43020 (14) | 0.38690 (19) | 0.36366 (10) | 0.0287 (3) | |
H8 | 0.3670 | 0.3482 | 0.3862 | 0.034* | |
C9 | 0.42509 (14) | 0.52643 (18) | 0.31143 (10) | 0.0262 (3) | |
C10 | 0.71675 (13) | 0.39120 (16) | 0.31857 (9) | 0.0218 (3) | |
C11 | 0.91672 (13) | 0.42285 (16) | 0.33429 (9) | 0.0222 (3) | |
C12 | 0.32313 (15) | 0.6470 (2) | 0.28071 (13) | 0.0386 (4) | |
H12A | 0.3481 | 0.7316 | 0.2466 | 0.058* | |
H12B | 0.3074 | 0.6928 | 0.3343 | 0.058* | |
H12C | 0.2469 | 0.5957 | 0.2411 | 0.058* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0210 (2) | 0.0357 (2) | 0.0290 (2) | −0.00344 (13) | 0.00779 (15) | −0.00294 (13) |
N1 | 0.0233 (6) | 0.0232 (6) | 0.0304 (6) | 0.0020 (5) | 0.0120 (5) | 0.0040 (5) |
N2 | 0.0235 (6) | 0.0206 (6) | 0.0301 (6) | 0.0012 (4) | 0.0136 (5) | 0.0031 (4) |
N3 | 0.0235 (6) | 0.0263 (6) | 0.0330 (6) | −0.0013 (5) | 0.0145 (5) | −0.0075 (5) |
N4 | 0.0242 (6) | 0.0270 (6) | 0.0340 (6) | −0.0030 (5) | 0.0141 (5) | −0.0049 (5) |
N5 | 0.0224 (6) | 0.0193 (5) | 0.0210 (5) | 0.0013 (4) | 0.0088 (5) | −0.0009 (4) |
N6 | 0.0311 (7) | 0.0225 (6) | 0.0248 (6) | 0.0018 (5) | 0.0089 (5) | −0.0048 (4) |
C1 | 0.0288 (7) | 0.0241 (7) | 0.0251 (7) | −0.0021 (5) | 0.0125 (6) | 0.0010 (5) |
C2 | 0.0459 (10) | 0.0302 (8) | 0.0355 (8) | −0.0082 (7) | 0.0019 (7) | 0.0026 (6) |
C3 | 0.0468 (11) | 0.0443 (10) | 0.0382 (9) | −0.0008 (8) | −0.0018 (8) | 0.0085 (8) |
C4 | 0.0500 (10) | 0.0327 (9) | 0.0369 (8) | 0.0094 (7) | 0.0168 (7) | 0.0099 (6) |
C5 | 0.0477 (10) | 0.0223 (7) | 0.0372 (8) | 0.0004 (6) | 0.0195 (7) | −0.0018 (6) |
C6 | 0.0316 (8) | 0.0262 (7) | 0.0313 (8) | −0.0027 (6) | 0.0122 (6) | −0.0033 (6) |
C7 | 0.0258 (7) | 0.0230 (7) | 0.0242 (6) | −0.0061 (5) | 0.0101 (5) | −0.0012 (5) |
C8 | 0.0246 (7) | 0.0313 (8) | 0.0333 (7) | −0.0045 (6) | 0.0136 (6) | 0.0045 (6) |
C9 | 0.0223 (7) | 0.0283 (7) | 0.0294 (7) | −0.0019 (5) | 0.0104 (6) | 0.0014 (6) |
C10 | 0.0217 (7) | 0.0208 (6) | 0.0242 (6) | 0.0001 (5) | 0.0094 (5) | 0.0018 (5) |
C11 | 0.0244 (7) | 0.0229 (7) | 0.0207 (6) | 0.0014 (5) | 0.0091 (5) | 0.0014 (5) |
C12 | 0.0262 (8) | 0.0422 (9) | 0.0521 (10) | 0.0079 (7) | 0.0193 (7) | 0.0143 (8) |
S1—C11 | 1.6697 (14) | C2—C3 | 1.384 (2) |
N1—C9 | 1.3230 (19) | C2—H2 | 0.9500 |
N1—N2 | 1.3714 (16) | C3—C4 | 1.383 (3) |
N2—C7 | 1.3670 (18) | C3—H3 | 0.9500 |
N2—C10 | 1.3949 (18) | C4—C5 | 1.377 (3) |
N3—C11 | 1.3401 (18) | C4—H4 | 0.9500 |
N3—N4 | 1.3790 (17) | C5—C6 | 1.387 (2) |
N3—H3A | 0.9100 | C5—H5 | 0.9500 |
N4—C10 | 1.2968 (18) | C6—H6 | 0.9500 |
N5—C10 | 1.3639 (18) | C7—C8 | 1.363 (2) |
N5—C11 | 1.3759 (17) | C8—C9 | 1.413 (2) |
N5—N6 | 1.3953 (15) | C8—H8 | 0.9500 |
N6—H6A | 0.9101 | C9—C12 | 1.492 (2) |
N6—H6B | 0.9099 | C12—H12A | 0.9800 |
C1—C2 | 1.392 (2) | C12—H12B | 0.9800 |
C1—C6 | 1.392 (2) | C12—H12C | 0.9800 |
C1—C7 | 1.477 (2) | ||
C9—N1—N2 | 104.65 (11) | C4—C5—H5 | 119.6 |
C7—N2—N1 | 112.32 (11) | C6—C5—H5 | 119.6 |
C7—N2—C10 | 127.07 (12) | C5—C6—C1 | 119.77 (15) |
N1—N2—C10 | 120.47 (11) | C5—C6—H6 | 120.1 |
C11—N3—N4 | 113.70 (11) | C1—C6—H6 | 120.1 |
C11—N3—H3A | 127.7 | C8—C7—N2 | 105.56 (12) |
N4—N3—H3A | 118.6 | C8—C7—C1 | 133.80 (13) |
C10—N4—N3 | 103.20 (11) | N2—C7—C1 | 120.55 (12) |
C10—N5—C11 | 107.82 (11) | C7—C8—C9 | 106.58 (12) |
C10—N5—N6 | 123.89 (11) | C7—C8—H8 | 126.7 |
C11—N5—N6 | 128.28 (12) | C9—C8—H8 | 126.7 |
N5—N6—H6A | 107.0 | N1—C9—C8 | 110.89 (13) |
N5—N6—H6B | 105.4 | N1—C9—C12 | 120.25 (13) |
H6A—N6—H6B | 109.8 | C8—C9—C12 | 128.85 (14) |
C2—C1—C6 | 119.08 (14) | N4—C10—N5 | 112.16 (12) |
C2—C1—C7 | 119.82 (13) | N4—C10—N2 | 124.53 (13) |
C6—C1—C7 | 121.07 (13) | N5—C10—N2 | 123.26 (12) |
C3—C2—C1 | 120.73 (16) | N3—C11—N5 | 103.12 (11) |
C3—C2—H2 | 119.6 | N3—C11—S1 | 129.55 (11) |
C1—C2—H2 | 119.6 | N5—C11—S1 | 127.32 (11) |
C4—C3—C2 | 119.73 (16) | C9—C12—H12A | 109.5 |
C4—C3—H3 | 120.1 | C9—C12—H12B | 109.5 |
C2—C3—H3 | 120.1 | H12A—C12—H12B | 109.5 |
C5—C4—C3 | 119.98 (16) | C9—C12—H12C | 109.5 |
C5—C4—H4 | 120.0 | H12A—C12—H12C | 109.5 |
C3—C4—H4 | 120.0 | H12B—C12—H12C | 109.5 |
C4—C5—C6 | 120.70 (15) | ||
C9—N1—N2—C7 | 0.12 (16) | N2—N1—C9—C8 | −0.21 (16) |
C9—N1—N2—C10 | 176.19 (12) | N2—N1—C9—C12 | 178.88 (14) |
C11—N3—N4—C10 | −0.45 (16) | C7—C8—C9—N1 | 0.23 (18) |
C6—C1—C2—C3 | −0.5 (3) | C7—C8—C9—C12 | −178.76 (16) |
C7—C1—C2—C3 | −178.43 (16) | N3—N4—C10—N5 | −0.20 (15) |
C1—C2—C3—C4 | 0.0 (3) | N3—N4—C10—N2 | −177.56 (12) |
C2—C3—C4—C5 | 0.5 (3) | C11—N5—C10—N4 | 0.75 (15) |
C3—C4—C5—C6 | −0.4 (3) | N6—N5—C10—N4 | 179.53 (12) |
C4—C5—C6—C1 | −0.1 (2) | C11—N5—C10—N2 | 178.15 (12) |
C2—C1—C6—C5 | 0.5 (2) | N6—N5—C10—N2 | −3.1 (2) |
C7—C1—C6—C5 | 178.45 (13) | C7—N2—C10—N4 | 64.2 (2) |
N1—N2—C7—C8 | 0.02 (16) | N1—N2—C10—N4 | −111.26 (16) |
C10—N2—C7—C8 | −175.74 (13) | C7—N2—C10—N5 | −112.89 (16) |
N1—N2—C7—C1 | −176.94 (12) | N1—N2—C10—N5 | 71.66 (18) |
C10—N2—C7—C1 | 7.3 (2) | N4—N3—C11—N5 | 0.88 (15) |
C2—C1—C7—C8 | −118.65 (19) | N4—N3—C11—S1 | −178.60 (11) |
C6—C1—C7—C8 | 63.4 (2) | C10—N5—C11—N3 | −0.94 (14) |
C2—C1—C7—N2 | 57.3 (2) | N6—N5—C11—N3 | −179.65 (12) |
C6—C1—C7—N2 | −120.64 (15) | C10—N5—C11—S1 | 178.55 (10) |
N2—C7—C8—C9 | −0.14 (16) | N6—N5—C11—S1 | −0.2 (2) |
C1—C7—C8—C9 | 176.23 (15) |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3A···N1i | 0.91 | 1.94 | 2.8429 (17) | 169 |
N6—H6A···S1ii | 0.91 | 2.55 | 3.4157 (13) | 159 |
N6—H6B···N4iii | 0.91 | 2.43 | 3.0059 (18) | 122 |
Symmetry codes: (i) −x+3/2, y−1/2, −z+1/2; (ii) −x+2, −y+1, −z+1; (iii) −x+3/2, y+1/2, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3A···N1i | 0.91 | 1.94 | 2.8429 (17) | 169 |
N6—H6A···S1ii | 0.91 | 2.55 | 3.4157 (13) | 159 |
N6—H6B···N4iii | 0.91 | 2.43 | 3.0059 (18) | 122 |
Symmetry codes: (i) −x+3/2, y−1/2, −z+1/2; (ii) −x+2, −y+1, −z+1; (iii) −x+3/2, y+1/2, −z+1/2. |
Acknowledgements
The support of NSF–MRI grant No. 1228232 for the purchase of the diffractometer and Tulane University for support of the Tulane Crystallography Laboratory are gratefully acknowledged.
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Amino-1,2,4-triazoles are known to be biologically active compounds (Jin et al., 2007). For example, the 5-amino-1,2,4- triazole itself has been used as the pesticide Amitrole (Joung et al., 2000) and 3,5-diamino-1,2,4-triazole (Guanazole) is an antitumor drug that inhibits ribonucleotide reductase and DNA synthesis. In addition, they play an important role as amidine type synthons in heterocyclic chemistry (Curtis, 2004) particularly fused ring systems, such as imidazo[1,2-b][1,2,4]triazole, imidazo[2,1-c][1,2,4]triazole, 1,2,4-triazolo[1,5-a]pyrimidine and 1,2,4-traizolo[1,5-a][1,3,5]triazine possessing variety of biological effects. In this context, we report in this study the synthesis and crystal structure of the title compound.
In the title compound (Fig. 1), the dihedral angle between the central 5-membered ring and its attached phenyl ring is 59.83 (5)° while the dihedral angle between the two 5-membered rings is 68.01 (4)°. In the crystal, the molecules form sheets lying parallel to (101) through N—H···N and N—H···S hydrogen bonds (Fig. 2 and Table 1).