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ISSN: 2056-9890

3-Methyl-4-[(E)-3-thien­ylmethyl­­idene­amino]-1H-1,2,4-triazole-5(4H)-thione

aSchool of Chemical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, and bX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
*Correspondence e-mail: hkfun@usm.my

(Received 5 October 2010; accepted 13 October 2010; online 20 October 2010)

The asymmetric unit of the title compound, C8H8N4S2, contains two crystallographically independent mol­ecules. The thio­phene ring of one mol­ecule is disordered over two positions with refined site occupancies of 0.6375 (19) and 0.3625 (19). One mol­ecule is almost planar and the other one is twisted, the dihedral angles between the thio­phene and triazole rings being 7.28 (7) and 48.9 (2)° [48.5 (4)° for the minor component], respectively. An intra­molecular C—H⋯S hydrogen bond stabilizes the mol­ecular conformation of the planar molecule. In the crystal, the two mol­ecules are inter­connected by N—H⋯S hydrogen bonds into dimers, which are further consolidated into chains along the b axis by C—H⋯N hydrogen bonds. Weak C–H⋯π and ππ inter­actions [centroid–centroid distance = 3.5149 (7) Å] are also observed.

Related literature

For general background and the biological activity of Schiff bases of 1,2,4-triazole derivatives, see: Ghazzali et al. (2010[Ghazzali, M., Al-Farhan, K., El-Faham, A. & Reedijk, J. (2010). Polyhedron, 29, 2829-2832.]); Xia et al. (2010[Xia, Y., Qu, F. & Peng, L. (2010). Mini-Rev. Med. Chem. 10, 806-821.]); Aytac et al. (2009[Aytac, S. P., Tozkoparan, B., Kaynak, F. B., Aktay, G., Goktas, O. & Unuvar, S. (2009). Eur. J. Med. Chem. 44, 4528-4538.]); Siddiqui et al. (2006[Siddiqui, Z. N., Khuwaja, G. & Asad, M. (2006). Heterocycl. Commun. 12, 443-448.]); Kucukguzel et al. (2008[Kucukguzel, I., Tatar, E., Kucukguzel, S. G., Rolollas, S. & Clercq, E. D. (2008). Eur. J. Med. Chem. 43, 381-392.]). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986[Cosier, J. & Glazer, A. M. (1986). J. Appl. Cryst. 19, 105-107.]).

[Scheme 1]

Experimental

Crystal data
  • C8H8N4S2

  • Mr = 224.30

  • Triclinic, [P \overline 1]

  • a = 9.3108 (7) Å

  • b = 10.2848 (8) Å

  • c = 12.7798 (10) Å

  • α = 66.632 (2)°

  • β = 83.409 (2)°

  • γ = 63.974 (2)°

  • V = 1006.88 (13) Å3

  • Z = 4

  • Mo Kα radiation

  • μ = 0.49 mm−1

  • T = 100 K

  • 0.36 × 0.25 × 0.23 mm

Data collection
  • Bruker APEXII DUO CCD area-detector diffractometer

  • Absorption correction: multi-scan (SADABS; Bruker, 2009[Bruker (2009). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]) Tmin = 0.845, Tmax = 0.896

  • 23519 measured reflections

  • 8745 independent reflections

  • 7500 reflections with I > 2σ(I)

  • Rint = 0.025

Refinement
  • R[F2 > 2σ(F2)] = 0.040

  • wR(F2) = 0.114

  • S = 1.06

  • 8745 reflections

  • 288 parameters

  • 1 restraint

  • H atoms treated by a mixture of independent and constrained refinement

  • Δρmax = 1.06 e Å−3

  • Δρmin = −0.50 e Å−3

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A D—H H⋯A DA D—H⋯A
N3A—H3NA⋯S2Bi 0.894 (19) 2.46 (2) 3.3494 (11) 177.7 (18)
N3B—H3NB⋯S2Aii 0.84 (2) 2.45 (2) 3.2728 (12) 167.7 (19)
C5A—H5AA⋯S2A 0.93 2.50 3.2311 (12) 135
C8B—H8BA⋯N4Aiii 0.96 2.59 3.5503 (16) 175
C5B—H5BACg1iv 0.93 2.91 3.4955 (12) 122
Symmetry codes: (i) x-1, y, z-1; (ii) x+1, y, z+1; (iii) x+1, y-1, z+1; (iv) -x+1, -y, -z+1.

Data collection: APEX2 (Bruker, 2009[Bruker (2009). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 2009[Bruker (2009). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]).

Supporting information


Comment top

Schiff bases of 1,2,4-triazole and its derivatives have been the subject of current research in the field of pharmacology and coordination chemistry (Ghazzali et al., 2010). Due to the bioactivity associated with substituted 1,2,4-triazoles, researchers and chemists are very much interested to study the chemistry of these compounds, as they exhibit a broad spectrum of biological properties such as anticancer (Xia et al., 2010), anti-inflammatory/analgesic (Aytac et al., 2009), antibacterial/antifungal (Siddiqui et al., 2006), antiviral/anti-HIV and anti-tuberculosis (Kucukguzel et al., 2008) activities.

The asymmetric unit of the title compound consists of two crystallographically independent molecules (Fig. 1). The thiophene ring of molecule B is disordered over two positions with refined site occupancies of 0.6375 (19) and 0.3625 (19). Both molecules exist in an E configuration with respect to the central C=N double bond. Molecule A is almost planar and molecule B is twisted, the dihedral angles between the thiophene ring and the triazole ring being 7.28 (7)° and 48.9 (2)° [48.5 (4)° for the minor component] respectively. Intramolecular C—H···S hydrogen bonds stabilize the molecular structures. In the crystal structure, the two molecules are interconnected by N3A—H3NA···S2B and N3B—H3NB···S2A hydrogen bonds (Table 1) into dimers and these dimers are further consolidated into chains along the b axis (Fig. 2) by C8B—H8BA···N4A hydrogen bonds (Table 1). Weak C–H···π and π···π interactions are also observed [Cg1···Cg2v = 3.5149 (7) Å; (v) 1 - x, -y, -z. Cg1 and Cg2 are centroids of S1A–C1A–C4A–C3A–C2A and N2A–C6A–N3A–N4A–C7A ring, respectively].

Related literature top

For general background and the biological activity of Schiff bases of 1,2,4-triazole derivatives, see: Ghazzali et al. (2010); Xia et al. (2010); Aytac et al. (2009); Siddiqui et al. (2006); Kucukguzel et al. (2008). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986).

Experimental top

A mixture of 3-methyl-4-amino-5-mercapto-1,2,4-triazole (4.46 mmol, 0.58 g) and thiophene-3-carboxaldehyde (4.46 mmol, 0.5 g) containing pyridine (0.1 ml) in ethanol was refluxed for about 13 to 14 h. The reaction mixture was cooled to room temperature and the light yellow solid was filtered off, washed with water, dried and recrystallized from chloroform-methanol (1:1 v/v) to get the title compound in 65% yield.

Refinement top

The thiophene ring of molecule B is disordered over two positions with refined site occupancies of 0.6375 (19) and 0.3625 (19). The same Uij parameters were used for the atom pairs C1B/C1X and C2B/C2X. The S1X–C2X bond distance was constrained to 1.70 (1) Å. The N-bound hydrogen atoms was located in a difference Fourier map and refined freely. The rest of hydrogen atoms were positioned geometrically [C–H = 0.93–0.96 Å] and refined using a riding model [Uiso(H) = 1.2–1.5Ueq(C)]. A rotating-group model were applied for methyl groups.

Structure description top

Schiff bases of 1,2,4-triazole and its derivatives have been the subject of current research in the field of pharmacology and coordination chemistry (Ghazzali et al., 2010). Due to the bioactivity associated with substituted 1,2,4-triazoles, researchers and chemists are very much interested to study the chemistry of these compounds, as they exhibit a broad spectrum of biological properties such as anticancer (Xia et al., 2010), anti-inflammatory/analgesic (Aytac et al., 2009), antibacterial/antifungal (Siddiqui et al., 2006), antiviral/anti-HIV and anti-tuberculosis (Kucukguzel et al., 2008) activities.

The asymmetric unit of the title compound consists of two crystallographically independent molecules (Fig. 1). The thiophene ring of molecule B is disordered over two positions with refined site occupancies of 0.6375 (19) and 0.3625 (19). Both molecules exist in an E configuration with respect to the central C=N double bond. Molecule A is almost planar and molecule B is twisted, the dihedral angles between the thiophene ring and the triazole ring being 7.28 (7)° and 48.9 (2)° [48.5 (4)° for the minor component] respectively. Intramolecular C—H···S hydrogen bonds stabilize the molecular structures. In the crystal structure, the two molecules are interconnected by N3A—H3NA···S2B and N3B—H3NB···S2A hydrogen bonds (Table 1) into dimers and these dimers are further consolidated into chains along the b axis (Fig. 2) by C8B—H8BA···N4A hydrogen bonds (Table 1). Weak C–H···π and π···π interactions are also observed [Cg1···Cg2v = 3.5149 (7) Å; (v) 1 - x, -y, -z. Cg1 and Cg2 are centroids of S1A–C1A–C4A–C3A–C2A and N2A–C6A–N3A–N4A–C7A ring, respectively].

For general background and the biological activity of Schiff bases of 1,2,4-triazole derivatives, see: Ghazzali et al. (2010); Xia et al. (2010); Aytac et al. (2009); Siddiqui et al. (2006); Kucukguzel et al. (2008). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986).

Computing details top

Data collection: APEX2 (Bruker, 2009); cell refinement: SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).

Figures top
[Figure 1] Fig. 1. The molecular structure of the title compound with atom labels and 50% probability ellipsoids for non-H atoms.
[Figure 2] Fig. 2. The crystal packing of the title compound viewed down the c axis showing chains along the b axis. Only the major component of disorder is shown. Intermolecular hydrogen bonds are shown as dashed lines.
3-Methyl-4-[(E)-3-thienylmethylideneamino]-1H-1,2,4-triazole- 5(4H)-thione top
Crystal data top
C8H8N4S2Z = 4
Mr = 224.30F(000) = 464
Triclinic, P1Dx = 1.480 Mg m3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 9.3108 (7) ÅCell parameters from 9994 reflections
b = 10.2848 (8) Åθ = 2.4–35.0°
c = 12.7798 (10) ŵ = 0.49 mm1
α = 66.632 (2)°T = 100 K
β = 83.409 (2)°Block, colourless
γ = 63.974 (2)°0.36 × 0.25 × 0.23 mm
V = 1006.88 (13) Å3
Data collection top
Bruker APEXII DUO CCD area-detector
diffractometer
8745 independent reflections
Radiation source: fine-focus sealed tube7500 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.025
φ and ω scansθmax = 35.1°, θmin = 2.4°
Absorption correction: multi-scan
(SADABS; Bruker, 2009)
h = 1513
Tmin = 0.845, Tmax = 0.896k = 1616
23519 measured reflectionsl = 1720
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) = 0.114H atoms treated by a mixture of independent and constrained refinement
S = 1.06 w = 1/[σ2(Fo2) + (0.0606P)2 + 0.2963P]
where P = (Fo2 + 2Fc2)/3
8745 reflections(Δ/σ)max = 0.001
288 parametersΔρmax = 1.06 e Å3
1 restraintΔρmin = 0.50 e Å3
Crystal data top
C8H8N4S2γ = 63.974 (2)°
Mr = 224.30V = 1006.88 (13) Å3
Triclinic, P1Z = 4
a = 9.3108 (7) ÅMo Kα radiation
b = 10.2848 (8) ŵ = 0.49 mm1
c = 12.7798 (10) ÅT = 100 K
α = 66.632 (2)°0.36 × 0.25 × 0.23 mm
β = 83.409 (2)°
Data collection top
Bruker APEXII DUO CCD area-detector
diffractometer
8745 independent reflections
Absorption correction: multi-scan
(SADABS; Bruker, 2009)
7500 reflections with I > 2σ(I)
Tmin = 0.845, Tmax = 0.896Rint = 0.025
23519 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0401 restraint
wR(F2) = 0.114H atoms treated by a mixture of independent and constrained refinement
S = 1.06Δρmax = 1.06 e Å3
8745 reflectionsΔρmin = 0.50 e Å3
288 parameters
Special details top

Experimental. The crystal was placed in the cold stream of an Oxford Cryosystems Cobra open-flow nitrogen cryostat (Cosier & Glazer, 1986) operating at 100.0 (1) K.

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*/UeqOcc. (<1)
S1A0.76095 (4)0.34744 (4)0.39899 (2)0.02948 (7)
S2A0.22259 (3)0.11508 (3)0.03400 (2)0.02363 (6)
N1A0.35008 (11)0.05807 (10)0.09471 (7)0.02091 (15)
N2A0.24129 (11)0.12778 (10)0.00194 (7)0.01941 (14)
N3A0.07864 (12)0.20250 (10)0.13672 (8)0.02245 (16)
N4A0.06835 (12)0.33875 (11)0.13366 (8)0.02392 (17)
C1A0.63594 (14)0.31400 (13)0.29387 (9)0.02447 (19)
H1AA0.63480.39240.27550.029*
C2A0.68112 (15)0.15163 (15)0.37468 (10)0.0279 (2)
H2AA0.71370.11080.41570.033*
C3A0.56310 (14)0.06294 (13)0.28710 (9)0.02428 (19)
H3AA0.50650.04560.26140.029*
C4A0.53698 (12)0.15641 (12)0.23970 (8)0.02067 (16)
C5A0.42312 (13)0.09238 (12)0.14318 (8)0.02136 (17)
H5AA0.40420.15710.11790.026*
C6A0.18194 (12)0.07072 (11)0.05621 (8)0.01945 (16)
C7A0.16892 (13)0.29067 (12)0.04888 (8)0.02199 (17)
C8A0.20936 (16)0.39193 (13)0.01317 (10)0.0285 (2)
H8AA0.15510.49920.06540.043*
H8AB0.32300.35970.01340.043*
H8AC0.17620.38250.06240.043*
S2B0.88542 (4)0.23323 (3)0.64301 (2)0.02461 (7)
N1B0.78425 (11)0.05827 (10)0.51301 (7)0.02158 (16)
N2B0.85328 (11)0.01306 (10)0.62466 (7)0.01962 (15)
N3B0.97744 (12)0.07490 (11)0.77934 (8)0.02242 (16)
N4B0.98117 (13)0.21239 (11)0.78403 (8)0.02472 (17)
C4B0.58641 (12)0.28766 (11)0.37606 (8)0.01978 (16)
S1B0.38121 (11)0.51444 (11)0.21591 (7)0.02699 (15)0.6375 (19)
C1B0.4516 (4)0.4333 (3)0.3522 (3)0.0172 (6)0.6375 (19)
H1BA0.40770.47840.40540.021*0.6375 (19)
C2B0.5300 (10)0.3569 (8)0.1808 (6)0.0429 (15)0.6375 (19)
H2BA0.53900.34960.10990.051*0.6375 (19)
C3B0.6279 (10)0.2492 (8)0.2775 (7)0.0299 (7)0.6375 (19)
H3BA0.71510.15770.27890.036*0.6375 (19)
S1X0.5125 (4)0.3829 (3)0.1634 (2)0.0288 (4)0.3625 (19)
C1X0.6323 (13)0.2441 (10)0.2839 (10)0.0172 (6)0.3625 (19)
H1XA0.71790.15060.28710.021*0.3625 (19)
C2X0.3997 (10)0.5014 (10)0.2362 (7)0.0429 (15)0.3625 (19)
H2XA0.31320.59900.20400.051*0.3625 (19)
C3X0.4540 (11)0.4332 (11)0.3424 (8)0.048 (2)0.3625 (19)
H3XA0.40620.47990.39430.057*0.3625 (19)
C5B0.66610 (12)0.19528 (11)0.49031 (8)0.01976 (16)
H5BA0.63190.23500.54720.024*
C6B0.90351 (12)0.04953 (11)0.68276 (8)0.01932 (16)
C7B0.90578 (13)0.17204 (11)0.68809 (8)0.02196 (17)
C8B0.87796 (17)0.27885 (13)0.65086 (10)0.0302 (2)
H8BA0.92310.38320.70870.045*
H8BB0.92790.27900.58090.045*
H8BC0.76490.24360.63890.045*
H3NA0.025 (2)0.210 (2)0.1941 (16)0.035 (5)*
H3NB1.027 (2)0.077 (2)0.8312 (17)0.037 (5)*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
S1A0.02947 (14)0.02718 (13)0.02285 (12)0.01128 (11)0.00947 (10)0.00081 (10)
S2A0.02878 (13)0.01789 (11)0.02143 (11)0.00851 (9)0.00820 (9)0.00404 (8)
N1A0.0232 (4)0.0199 (3)0.0164 (3)0.0082 (3)0.0052 (3)0.0033 (3)
N2A0.0224 (4)0.0171 (3)0.0158 (3)0.0077 (3)0.0046 (3)0.0028 (3)
N3A0.0257 (4)0.0188 (3)0.0196 (3)0.0092 (3)0.0074 (3)0.0025 (3)
N4A0.0279 (4)0.0187 (4)0.0213 (4)0.0091 (3)0.0065 (3)0.0029 (3)
C1A0.0253 (5)0.0209 (4)0.0227 (4)0.0103 (4)0.0057 (3)0.0018 (3)
C2A0.0320 (5)0.0301 (5)0.0219 (4)0.0149 (4)0.0066 (4)0.0064 (4)
C3A0.0295 (5)0.0233 (4)0.0187 (4)0.0119 (4)0.0053 (3)0.0044 (3)
C4A0.0223 (4)0.0200 (4)0.0166 (3)0.0098 (3)0.0041 (3)0.0019 (3)
C5A0.0230 (4)0.0197 (4)0.0187 (4)0.0088 (3)0.0051 (3)0.0035 (3)
C6A0.0209 (4)0.0187 (4)0.0160 (3)0.0081 (3)0.0034 (3)0.0034 (3)
C7A0.0260 (4)0.0172 (4)0.0190 (4)0.0084 (3)0.0043 (3)0.0028 (3)
C8A0.0369 (6)0.0209 (4)0.0266 (5)0.0126 (4)0.0080 (4)0.0052 (4)
S2B0.03028 (13)0.01731 (11)0.02452 (12)0.00988 (9)0.00816 (9)0.00420 (9)
N1B0.0251 (4)0.0173 (3)0.0176 (3)0.0066 (3)0.0066 (3)0.0029 (3)
N2B0.0229 (4)0.0144 (3)0.0173 (3)0.0064 (3)0.0061 (3)0.0019 (3)
N3B0.0275 (4)0.0197 (4)0.0183 (3)0.0108 (3)0.0063 (3)0.0028 (3)
N4B0.0316 (5)0.0182 (3)0.0205 (4)0.0107 (3)0.0081 (3)0.0011 (3)
C4B0.0219 (4)0.0163 (4)0.0181 (4)0.0083 (3)0.0035 (3)0.0024 (3)
S1B0.0283 (3)0.0208 (2)0.0227 (2)0.00926 (19)0.00948 (18)0.00179 (17)
C1B0.0168 (9)0.0083 (7)0.0140 (7)0.0010 (6)0.0091 (7)0.0030 (6)
C2B0.0343 (17)0.0261 (19)0.063 (4)0.0096 (14)0.002 (2)0.014 (2)
C3B0.0346 (15)0.0358 (15)0.0226 (16)0.0165 (12)0.0019 (11)0.0131 (12)
S1X0.0313 (8)0.0265 (9)0.0240 (5)0.0102 (7)0.0031 (5)0.0066 (5)
C1X0.0168 (9)0.0083 (7)0.0140 (7)0.0010 (6)0.0091 (7)0.0030 (6)
C2X0.0343 (17)0.0261 (19)0.063 (4)0.0096 (14)0.002 (2)0.014 (2)
C3X0.053 (4)0.056 (4)0.069 (5)0.041 (3)0.029 (3)0.044 (4)
C5B0.0215 (4)0.0172 (4)0.0180 (4)0.0080 (3)0.0034 (3)0.0034 (3)
C6B0.0202 (4)0.0172 (4)0.0184 (4)0.0075 (3)0.0034 (3)0.0041 (3)
C7B0.0268 (4)0.0152 (4)0.0190 (4)0.0080 (3)0.0067 (3)0.0010 (3)
C8B0.0433 (6)0.0178 (4)0.0266 (5)0.0125 (4)0.0124 (4)0.0027 (4)
Geometric parameters (Å, º) top
S1A—C1A1.7085 (11)N2B—C7B1.3812 (12)
S1A—C2A1.7170 (13)N3B—C6B1.3430 (12)
S2A—C6A1.6838 (10)N3B—N4B1.3765 (13)
N1A—C5A1.2859 (13)N3B—H3NB0.84 (2)
N1A—N2A1.3820 (11)N4B—C7B1.3063 (13)
N2A—C6A1.3881 (12)C4B—C1X1.381 (13)
N2A—C7A1.3889 (13)C4B—C3X1.392 (10)
N3A—C6A1.3408 (13)C4B—C1B1.410 (3)
N3A—N4A1.3781 (13)C4B—C3B1.429 (8)
N3A—H3NA0.896 (19)C4B—C5B1.4542 (13)
N4A—C7A1.3026 (13)S1B—C1B1.670 (3)
C1A—C4A1.3787 (15)S1B—C2B1.791 (9)
C1A—H1AA0.9300C1B—H1BA0.9300
C2A—C3A1.3730 (15)C2B—C3B1.367 (9)
C2A—H2AA0.9300C2B—H2BA0.9300
C3A—C4A1.4322 (15)C3B—H3BA0.9300
C3A—H3AA0.9300S1X—C1X1.705 (9)
C4A—C5A1.4568 (13)S1X—C2X1.734 (8)
C5A—H5AA0.9300C1X—H1XA0.9300
C7A—C8A1.4816 (15)C2X—C3X1.297 (13)
C8A—H8AA0.9600C2X—H2XA0.9300
C8A—H8AB0.9600C3X—H3XA0.9300
C8A—H8AC0.9600C5B—H5BA0.9300
S2B—C6B1.6837 (10)C7B—C8B1.4809 (15)
N1B—C5B1.2917 (13)C8B—H8BA0.9600
N1B—N2B1.3977 (11)C8B—H8BB0.9600
N2B—C6B1.3811 (12)C8B—H8BC0.9600
C1A—S1A—C2A92.44 (5)C1X—C4B—C3X109.6 (5)
C5A—N1A—N2A120.12 (9)C1X—C4B—C1B114.6 (3)
N1A—N2A—C6A134.03 (8)C3X—C4B—C3B107.0 (5)
N1A—N2A—C7A117.69 (8)C1B—C4B—C3B112.0 (3)
C6A—N2A—C7A108.28 (8)C1X—C4B—C5B124.8 (3)
C6A—N3A—N4A114.25 (8)C3X—C4B—C5B125.6 (4)
C6A—N3A—H3NA127.0 (12)C1B—C4B—C5B120.56 (16)
N4A—N3A—H3NA118.5 (12)C3B—C4B—C5B127.5 (3)
C7A—N4A—N3A104.29 (8)C1B—S1B—C2B94.2 (3)
C4A—C1A—S1A111.67 (8)C4B—C1B—S1B111.2 (2)
C4A—C1A—H1AA124.2C4B—C1B—H1BA124.4
S1A—C1A—H1AA124.2S1B—C1B—H1BA124.4
C3A—C2A—S1A111.42 (8)C3B—C2B—S1B107.5 (6)
C3A—C2A—H2AA124.3C3B—C2B—H2BA126.3
S1A—C2A—H2AA124.3S1B—C2B—H2BA126.3
C2A—C3A—C4A112.42 (10)C2B—C3B—C4B115.1 (6)
C2A—C3A—H3AA123.8C2B—C3B—H3BA122.4
C4A—C3A—H3AA123.8C4B—C3B—H3BA122.4
C1A—C4A—C3A112.04 (9)C1X—S1X—C2X91.4 (5)
C1A—C4A—C5A123.85 (10)C4B—C1X—S1X111.6 (5)
C3A—C4A—C5A124.08 (9)C4B—C1X—H1XA124.2
N1A—C5A—C4A116.66 (9)S1X—C1X—H1XA124.2
N1A—C5A—H5AA121.7C3X—C2X—S1X109.7 (7)
C4A—C5A—H5AA121.7C3X—C2X—H2XA125.1
N3A—C6A—N2A102.63 (8)S1X—C2X—H2XA125.1
N3A—C6A—S2A126.98 (8)C2X—C3X—C4B117.6 (8)
N2A—C6A—S2A130.38 (7)C2X—C3X—H3XA121.2
N4A—C7A—N2A110.54 (9)C4B—C3X—H3XA121.2
N4A—C7A—C8A125.91 (9)N1B—C5B—C4B120.21 (9)
N2A—C7A—C8A123.48 (9)N1B—C5B—H5BA119.9
C7A—C8A—H8AA109.5C4B—C5B—H5BA119.9
C7A—C8A—H8AB109.5N3B—C6B—N2B102.76 (8)
H8AA—C8A—H8AB109.5N3B—C6B—S2B127.50 (8)
C7A—C8A—H8AC109.5N2B—C6B—S2B129.69 (7)
H8AA—C8A—H8AC109.5N4B—C7B—N2B110.39 (9)
H8AB—C8A—H8AC109.5N4B—C7B—C8B125.79 (9)
C5B—N1B—N2B113.61 (9)N2B—C7B—C8B123.82 (9)
C6B—N2B—C7B108.61 (8)C7B—C8B—H8BA109.5
C6B—N2B—N1B128.38 (8)C7B—C8B—H8BB109.5
C7B—N2B—N1B122.26 (8)H8BA—C8B—H8BB109.5
C6B—N3B—N4B113.86 (8)C7B—C8B—H8BC109.5
C6B—N3B—H3NB126.2 (13)H8BA—C8B—H8BC109.5
N4B—N3B—H3NB119.7 (13)H8BB—C8B—H8BC109.5
C7B—N4B—N3B104.32 (8)
C5A—N1A—N2A—C6A2.18 (18)S1B—C2B—C3B—C4B0.9 (10)
C5A—N1A—N2A—C7A178.40 (10)C1X—C4B—C3B—C2B178 (100)
C6A—N3A—N4A—C7A0.28 (13)C3X—C4B—C3B—C2B1.7 (9)
C2A—S1A—C1A—C4A1.06 (10)C1B—C4B—C3B—C2B1.1 (9)
C1A—S1A—C2A—C3A0.79 (10)C5B—C4B—C3B—C2B178.9 (5)
S1A—C2A—C3A—C4A0.34 (14)C3X—C4B—C1X—S1X0.3 (10)
S1A—C1A—C4A—C3A1.04 (13)C1B—C4B—C1X—S1X1.0 (10)
S1A—C1A—C4A—C5A177.06 (9)C3B—C4B—C1X—S1X0 (19)
C2A—C3A—C4A—C1A0.45 (15)C5B—C4B—C1X—S1X179.1 (3)
C2A—C3A—C4A—C5A177.65 (11)C2X—S1X—C1X—C4B0.1 (9)
N2A—N1A—C5A—C4A179.43 (9)C1X—S1X—C2X—C3X0.6 (9)
C1A—C4A—C5A—N1A173.55 (11)S1X—C2X—C3X—C4B1.0 (11)
C3A—C4A—C5A—N1A4.33 (16)C1X—C4B—C3X—C2X0.9 (11)
N4A—N3A—C6A—N2A0.02 (12)C1B—C4B—C3X—C2X174 (6)
N4A—N3A—C6A—S2A179.17 (8)C3B—C4B—C3X—C2X0.9 (10)
N1A—N2A—C6A—N3A179.21 (11)C5B—C4B—C3X—C2X178.6 (6)
C7A—N2A—C6A—N3A0.24 (11)N2B—N1B—C5B—C4B177.18 (9)
N1A—N2A—C6A—S2A0.07 (18)C1X—C4B—C5B—N1B3.5 (7)
C7A—N2A—C6A—S2A179.39 (9)C3X—C4B—C5B—N1B177.1 (5)
N3A—N4A—C7A—N2A0.43 (12)C1B—C4B—C5B—N1B176.36 (19)
N3A—N4A—C7A—C8A176.66 (11)C3B—C4B—C5B—N1B3.6 (5)
N1A—N2A—C7A—N4A179.11 (9)N4B—N3B—C6B—N2B1.89 (12)
C6A—N2A—C7A—N4A0.44 (13)N4B—N3B—C6B—S2B175.95 (9)
N1A—N2A—C7A—C8A3.72 (16)C7B—N2B—C6B—N3B2.32 (12)
C6A—N2A—C7A—C8A176.73 (11)N1B—N2B—C6B—N3B172.46 (10)
C5B—N1B—N2B—C6B49.59 (15)C7B—N2B—C6B—S2B175.46 (9)
C5B—N1B—N2B—C7B141.48 (10)N1B—N2B—C6B—S2B5.31 (17)
C6B—N3B—N4B—C7B0.69 (13)N3B—N4B—C7B—N2B0.87 (13)
C1X—C4B—C1B—S1B0.7 (6)N3B—N4B—C7B—C8B179.50 (12)
C3X—C4B—C1B—S1B7 (5)C6B—N2B—C7B—N4B2.09 (13)
C3B—C4B—C1B—S1B0.7 (5)N1B—N2B—C7B—N4B172.96 (10)
C5B—C4B—C1B—S1B179.23 (13)C6B—N2B—C7B—C8B178.27 (11)
C2B—S1B—C1B—C4B0.2 (4)N1B—N2B—C7B—C8B7.40 (17)
C1B—S1B—C2B—C3B0.4 (7)
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N3A—H3NA···S2Bi0.894 (19)2.46 (2)3.3494 (11)177.7 (18)
N3B—H3NB···S2Aii0.84 (2)2.45 (2)3.2728 (12)167.7 (19)
C5A—H5AA···S2A0.932.503.2311 (12)135
C8B—H8BA···N4Aiii0.962.593.5503 (16)175
C5B—H5BA···Cg1iv0.932.913.4955 (12)122
Symmetry codes: (i) x1, y, z1; (ii) x+1, y, z+1; (iii) x+1, y1, z+1; (iv) x+1, y, z+1.

Experimental details

Crystal data
Chemical formulaC8H8N4S2
Mr224.30
Crystal system, space groupTriclinic, P1
Temperature (K)100
a, b, c (Å)9.3108 (7), 10.2848 (8), 12.7798 (10)
α, β, γ (°)66.632 (2), 83.409 (2), 63.974 (2)
V3)1006.88 (13)
Z4
Radiation typeMo Kα
µ (mm1)0.49
Crystal size (mm)0.36 × 0.25 × 0.23
Data collection
DiffractometerBruker APEXII DUO CCD area-detector
Absorption correctionMulti-scan
(SADABS; Bruker, 2009)
Tmin, Tmax0.845, 0.896
No. of measured, independent and
observed [I > 2σ(I)] reflections
23519, 8745, 7500
Rint0.025
(sin θ/λ)max1)0.809
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.040, 0.114, 1.06
No. of reflections8745
No. of parameters288
No. of restraints1
H-atom treatmentH atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å3)1.06, 0.50

Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).

Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N3A—H3NA···S2Bi0.894 (19)2.46 (2)3.3494 (11)177.7 (18)
N3B—H3NB···S2Aii0.84 (2)2.45 (2)3.2728 (12)167.7 (19)
C5A—H5AA···S2A0.93002.50003.2311 (12)135.00
C8B—H8BA···N4Aiii0.96002.59003.5503 (16)175.00
C5B—H5BA···Cg1iv0.932.913.4955 (12)122
Symmetry codes: (i) x1, y, z1; (ii) x+1, y, z+1; (iii) x+1, y1, z+1; (iv) x+1, y, z+1.
 

Footnotes

Additional correspondence author, e-mail: oocw@usm.my.

§Thomson Reuters ResearcherID: A-5523-2009.

Thomson Reuters ResearcherID: A-3561-2009.

Acknowledgements

The authors are thankful to Universiti Sains Malaysia (USM) for providing the necessary research facilities and RU research funding under grant No. 1001/PKIMIA/811134. MA also thanks Universiti Sains Malaysia for the award of a post doctoral fellowship and HKF and CSY thank USM for the Research University Grant No. 1001/PFIZIK/811160.

References

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