organic compounds
Benzyl 3-(2-methylphenyl)dithiocarbazate
aDepartment of Chemistry, Universiti Putra Malaysia, 43400 Serdang, Malaysia, and bDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
*Correspondence e-mail: edward.tiekink@gmail.com
In the title compound, C15H16N2S2, the central C2N2S2 unit is essentially planar (r.m.s. deviation = 0.047 Å) and forms dihedral angles of 68.26 (4) and 65.99 (4)° with the phenyl and benzene rings, respectively, indicating a twisted molecule. Supramolecular chains with a step topology and propagating along [100] feature in the crystal packing, mediated through N—H⋯S hydrogen bonds. The chains are consolidated into a three-dimensional architecture by C—H⋯π interactions.
Related literature
For background to the coordination chemistry and bio-activity of hydrazinecarbodithioates, see: Khoo et al. (2005); Chan et al. (2008); Ravoof et al. (2010). For related structures, see: Paulus et al. (2011); Manan et al. (2012). For the synthesis, see: Tarafder et al. (2002).
Experimental
Crystal data
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Refinement
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Data collection: CrysAlis PRO (Agilent, 2011); cell 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: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
10.1107/S160053681201567X/hg5209sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S160053681201567X/hg5209Isup2.hkl
Supporting information file. DOI: 10.1107/S160053681201567X/hg5209Isup3.cml
The compound was prepared by adapting the synthetic procedure for S-benzyldithiocarbazate (Tarafder et al., 2002). o-Tolylhydrazine hydrochloride (0.1 mol) in absolute ethanol (70 ml) was added to a solution of potassium hydroxide (0.1 mol) in absolute ethanol (40 ml). The mixture was cooled in an ice-salt bath and carbon disulfide (0.1 mol) was added drop-wise with constant stirring over one hour, during which a yellow-orange solution was formed. The temperature of reaction was kept below 278 K. Benzyl chloride (0.1 mol) was added drop-wise to the above solution with vigorous stirring while continuing to maintain the temperature below 278 K. The pale product was filtered off, dried briefly in a vacuum desiccator over anhydrous silica gel, recrystallized from absolute ethanol and kept in a freezer overnight. Dark-yellow crystals were grown from its ethanol solution. Yield 89%. M.pt: 392 K. Anal. Found (Calc.): C, 62.03 (62.46); H, 5.34 (5.59); N: 10.26 (9.71)%.
Carbon-bound H-atoms were placed in calculated positions (C—H = 0.95 to 0.99 Å) and were included in the
in the riding model approximation with Uiso(H) set to 1.2 to 1.5Uequiv(C). The amino H-atoms were refined with a distance restraint of N—H = 0.88±0.01 Å, and with Uiso(H) = 1.2Ueq(N).Data collection: CrysAlis PRO (Agilent, 2011); cell
CrysAlis PRO (Agilent, 2011); data reduction: CrysAlis PRO (Agilent, 2011); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).Fig. 1. The molecular structure of (I) showing the atom-labelling scheme and displacement ellipsoids at the 50% probability level. | |
Fig. 2. A view of the supramolecular chain in (I) mediated by N—H···S hydrogen bonding, shown as blue dashed lines. | |
Fig. 3. A view in projection down the a axis of the unit-cell contents for (I). The N—H···S hydrogen bonding and C—H···π interactions are shown as blue and purple dashed lines, respectively. |
C15H16N2S2 | F(000) = 608 |
Mr = 288.42 | Dx = 1.347 Mg m−3 |
Monoclinic, P21/n | Cu Kα radiation, λ = 1.54180 Å |
Hall symbol: -P 2yn | Cell parameters from 8863 reflections |
a = 5.7000 (1) Å | θ = 4–71° |
b = 11.0136 (2) Å | µ = 3.27 mm−1 |
c = 22.7545 (4) Å | T = 100 K |
β = 95.198 (2)° | Prism, dark-yellow |
V = 1422.60 (4) Å3 | 0.22 × 0.14 × 0.08 mm |
Z = 4 |
Oxford Diffraction Xcaliber Eos Gemini diffractometer | 2725 independent reflections |
Radiation source: fine-focus sealed tube | 2560 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.022 |
Detector resolution: 16.1952 pixels mm-1 | θmax = 71.5°, θmin = 3.9° |
ω/2θ scans | h = −6→6 |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2011) | k = −13→13 |
Tmin = 0.63, Tmax = 0.77 | l = −27→25 |
15011 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)] = 0.035 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.097 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0646P)2 + 0.6201P] where P = (Fo2 + 2Fc2)/3 |
2725 reflections | (Δ/σ)max = 0.001 |
179 parameters | Δρmax = 0.44 e Å−3 |
2 restraints | Δρmin = −0.23 e Å−3 |
C15H16N2S2 | V = 1422.60 (4) Å3 |
Mr = 288.42 | Z = 4 |
Monoclinic, P21/n | Cu Kα radiation |
a = 5.7000 (1) Å | µ = 3.27 mm−1 |
b = 11.0136 (2) Å | T = 100 K |
c = 22.7545 (4) Å | 0.22 × 0.14 × 0.08 mm |
β = 95.198 (2)° |
Oxford Diffraction Xcaliber Eos Gemini diffractometer | 2725 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2011) | 2560 reflections with I > 2σ(I) |
Tmin = 0.63, Tmax = 0.77 | Rint = 0.022 |
15011 measured reflections |
R[F2 > 2σ(F2)] = 0.035 | 2 restraints |
wR(F2) = 0.097 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | Δρmax = 0.44 e Å−3 |
2725 reflections | Δρmin = −0.23 e Å−3 |
179 parameters |
Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'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 > 2σ(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. |
x | y | z | Uiso*/Ueq | ||
S1 | 0.96691 (6) | 0.83305 (3) | 0.582743 (16) | 0.02154 (13) | |
S2 | 0.73047 (7) | 0.64766 (4) | 0.498745 (16) | 0.02497 (14) | |
N1 | 1.1403 (2) | 0.62113 (12) | 0.56054 (6) | 0.0234 (3) | |
H1n | 1.153 (3) | 0.5503 (11) | 0.5436 (8) | 0.028* | |
N2 | 1.3086 (2) | 0.65256 (12) | 0.60680 (6) | 0.0226 (3) | |
H2n | 1.446 (2) | 0.6572 (17) | 0.5924 (8) | 0.027* | |
C1 | 0.6928 (3) | 0.90389 (14) | 0.55250 (7) | 0.0247 (3) | |
H1A | 0.6944 | 0.9153 | 0.5094 | 0.030* | |
H1B | 0.5571 | 0.8516 | 0.5597 | 0.030* | |
C2 | 0.6713 (3) | 1.02493 (14) | 0.58237 (6) | 0.0216 (3) | |
C3 | 0.8217 (3) | 1.12038 (16) | 0.57225 (7) | 0.0277 (4) | |
H3 | 0.9444 | 1.1086 | 0.5472 | 0.033* | |
C4 | 0.7947 (3) | 1.23226 (16) | 0.59816 (8) | 0.0314 (4) | |
H4 | 0.8989 | 1.2967 | 0.5908 | 0.038* | |
C5 | 0.6166 (3) | 1.25144 (15) | 0.63490 (7) | 0.0285 (4) | |
H5 | 0.5978 | 1.3288 | 0.6524 | 0.034* | |
C6 | 0.4669 (3) | 1.15700 (15) | 0.64578 (8) | 0.0279 (4) | |
H6 | 0.3445 | 1.1693 | 0.6709 | 0.033* | |
C7 | 0.4950 (3) | 1.04384 (15) | 0.62004 (7) | 0.0252 (3) | |
H7 | 0.3931 | 0.9789 | 0.6282 | 0.030* | |
C8 | 0.9545 (3) | 0.69201 (14) | 0.54650 (6) | 0.0206 (3) | |
C9 | 1.3110 (3) | 0.57463 (14) | 0.65724 (7) | 0.0211 (3) | |
C10 | 1.4934 (3) | 0.59097 (14) | 0.70252 (7) | 0.0231 (3) | |
C11 | 1.4978 (3) | 0.51509 (15) | 0.75165 (7) | 0.0272 (3) | |
H11 | 1.6205 | 0.5243 | 0.7825 | 0.033* | |
C12 | 1.3278 (3) | 0.42639 (16) | 0.75675 (7) | 0.0294 (4) | |
H12 | 1.3361 | 0.3745 | 0.7902 | 0.035* | |
C13 | 1.1459 (3) | 0.41438 (16) | 0.71253 (7) | 0.0288 (4) | |
H13 | 1.0267 | 0.3553 | 0.7161 | 0.035* | |
C14 | 1.1371 (3) | 0.48843 (15) | 0.66296 (7) | 0.0250 (3) | |
H14 | 1.0114 | 0.4800 | 0.6328 | 0.030* | |
C15 | 1.6766 (3) | 0.68749 (16) | 0.69763 (7) | 0.0288 (4) | |
H15A | 1.7773 | 0.6925 | 0.7348 | 0.043* | |
H15B | 1.5991 | 0.7659 | 0.6894 | 0.043* | |
H15C | 1.7730 | 0.6670 | 0.6655 | 0.043* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0220 (2) | 0.0224 (2) | 0.0195 (2) | 0.00052 (13) | −0.00217 (14) | −0.00249 (13) |
S2 | 0.0232 (2) | 0.0274 (2) | 0.0232 (2) | −0.00015 (14) | −0.00370 (15) | −0.00584 (14) |
N1 | 0.0266 (7) | 0.0216 (6) | 0.0210 (6) | 0.0004 (5) | −0.0032 (5) | −0.0029 (5) |
N2 | 0.0217 (7) | 0.0245 (7) | 0.0207 (7) | −0.0005 (5) | −0.0028 (5) | 0.0004 (5) |
C1 | 0.0217 (8) | 0.0261 (8) | 0.0253 (8) | 0.0019 (6) | −0.0035 (6) | −0.0019 (6) |
C2 | 0.0209 (7) | 0.0242 (8) | 0.0188 (7) | 0.0017 (6) | −0.0030 (5) | 0.0008 (6) |
C3 | 0.0288 (8) | 0.0312 (8) | 0.0241 (8) | −0.0025 (7) | 0.0065 (6) | −0.0002 (6) |
C4 | 0.0372 (10) | 0.0252 (8) | 0.0323 (9) | −0.0060 (7) | 0.0055 (7) | 0.0007 (7) |
C5 | 0.0320 (9) | 0.0256 (8) | 0.0268 (8) | 0.0048 (6) | −0.0037 (6) | −0.0036 (6) |
C6 | 0.0214 (8) | 0.0359 (9) | 0.0263 (8) | 0.0047 (6) | 0.0019 (6) | −0.0026 (7) |
C7 | 0.0207 (7) | 0.0287 (8) | 0.0260 (8) | −0.0021 (6) | 0.0003 (6) | 0.0016 (6) |
C8 | 0.0230 (7) | 0.0233 (7) | 0.0157 (7) | −0.0025 (6) | 0.0026 (5) | 0.0008 (6) |
C9 | 0.0217 (7) | 0.0214 (7) | 0.0203 (7) | 0.0037 (6) | 0.0030 (6) | −0.0018 (6) |
C10 | 0.0218 (8) | 0.0269 (8) | 0.0208 (7) | 0.0033 (6) | 0.0024 (6) | −0.0049 (6) |
C11 | 0.0255 (8) | 0.0366 (9) | 0.0192 (7) | 0.0045 (7) | 0.0000 (6) | −0.0025 (6) |
C12 | 0.0343 (9) | 0.0339 (9) | 0.0205 (8) | 0.0048 (7) | 0.0062 (6) | 0.0034 (6) |
C13 | 0.0283 (8) | 0.0298 (8) | 0.0289 (8) | −0.0017 (7) | 0.0067 (6) | 0.0010 (7) |
C14 | 0.0234 (8) | 0.0263 (8) | 0.0247 (8) | 0.0004 (6) | −0.0004 (6) | −0.0019 (6) |
C15 | 0.0249 (8) | 0.0355 (9) | 0.0254 (8) | −0.0024 (7) | −0.0016 (6) | −0.0024 (7) |
S1—C8 | 1.7571 (15) | C5—H5 | 0.9500 |
S1—C1 | 1.8247 (16) | C6—C7 | 1.392 (2) |
S2—C8 | 1.6729 (15) | C6—H6 | 0.9500 |
N1—C8 | 1.331 (2) | C7—H7 | 0.9500 |
N1—N2 | 1.4020 (17) | C9—C14 | 1.387 (2) |
N1—H1n | 0.877 (9) | C9—C10 | 1.407 (2) |
N2—C9 | 1.432 (2) | C10—C11 | 1.394 (2) |
N2—H2n | 0.878 (9) | C10—C15 | 1.501 (2) |
C1—C2 | 1.506 (2) | C11—C12 | 1.388 (2) |
C1—H1A | 0.9900 | C11—H11 | 0.9500 |
C1—H1B | 0.9900 | C12—C13 | 1.384 (2) |
C2—C3 | 1.389 (2) | C12—H12 | 0.9500 |
C2—C7 | 1.394 (2) | C13—C14 | 1.389 (2) |
C3—C4 | 1.381 (2) | C13—H13 | 0.9500 |
C3—H3 | 0.9500 | C14—H14 | 0.9500 |
C4—C5 | 1.389 (3) | C15—H15A | 0.9800 |
C4—H4 | 0.9500 | C15—H15B | 0.9800 |
C5—C6 | 1.382 (2) | C15—H15C | 0.9800 |
C8—S1—C1 | 101.79 (7) | C2—C7—H7 | 119.7 |
C8—N1—N2 | 120.74 (13) | C6—C7—H7 | 119.7 |
C8—N1—H1n | 120.8 (13) | N1—C8—S2 | 121.91 (12) |
N2—N1—H1n | 118.2 (13) | N1—C8—S1 | 114.11 (11) |
N1—N2—C9 | 114.19 (12) | S2—C8—S1 | 123.98 (9) |
N1—N2—H2n | 108.0 (13) | C14—C9—C10 | 120.37 (14) |
C9—N2—H2n | 112.9 (13) | C14—C9—N2 | 122.02 (14) |
C2—C1—S1 | 108.06 (10) | C10—C9—N2 | 117.57 (14) |
C2—C1—H1A | 110.1 | C11—C10—C9 | 117.97 (15) |
S1—C1—H1A | 110.1 | C11—C10—C15 | 121.44 (14) |
C2—C1—H1B | 110.1 | C9—C10—C15 | 120.59 (14) |
S1—C1—H1B | 110.1 | C12—C11—C10 | 121.78 (15) |
H1A—C1—H1B | 108.4 | C12—C11—H11 | 119.1 |
C3—C2—C7 | 118.62 (15) | C10—C11—H11 | 119.1 |
C3—C2—C1 | 121.22 (14) | C13—C12—C11 | 119.28 (15) |
C7—C2—C1 | 120.15 (14) | C13—C12—H12 | 120.4 |
C4—C3—C2 | 120.69 (15) | C11—C12—H12 | 120.4 |
C4—C3—H3 | 119.7 | C12—C13—C14 | 120.25 (16) |
C2—C3—H3 | 119.7 | C12—C13—H13 | 119.9 |
C3—C4—C5 | 120.58 (16) | C14—C13—H13 | 119.9 |
C3—C4—H4 | 119.7 | C9—C14—C13 | 120.29 (15) |
C5—C4—H4 | 119.7 | C9—C14—H14 | 119.9 |
C6—C5—C4 | 119.37 (15) | C13—C14—H14 | 119.9 |
C6—C5—H5 | 120.3 | C10—C15—H15A | 109.5 |
C4—C5—H5 | 120.3 | C10—C15—H15B | 109.5 |
C5—C6—C7 | 120.12 (16) | H15A—C15—H15B | 109.5 |
C5—C6—H6 | 119.9 | C10—C15—H15C | 109.5 |
C7—C6—H6 | 119.9 | H15A—C15—H15C | 109.5 |
C2—C7—C6 | 120.61 (15) | H15B—C15—H15C | 109.5 |
C8—N1—N2—C9 | 111.24 (16) | C1—S1—C8—S2 | −1.24 (12) |
C8—S1—C1—C2 | 176.89 (11) | N1—N2—C9—C14 | −9.7 (2) |
S1—C1—C2—C3 | 68.74 (16) | N1—N2—C9—C10 | 172.43 (13) |
S1—C1—C2—C7 | −112.65 (14) | C14—C9—C10—C11 | 2.4 (2) |
C7—C2—C3—C4 | −1.1 (2) | N2—C9—C10—C11 | −179.66 (14) |
C1—C2—C3—C4 | 177.55 (15) | C14—C9—C10—C15 | −177.54 (14) |
C2—C3—C4—C5 | 0.0 (3) | N2—C9—C10—C15 | 0.4 (2) |
C3—C4—C5—C6 | 0.5 (3) | C9—C10—C11—C12 | −0.6 (2) |
C4—C5—C6—C7 | 0.0 (2) | C15—C10—C11—C12 | 179.38 (15) |
C3—C2—C7—C6 | 1.6 (2) | C10—C11—C12—C13 | −1.4 (2) |
C1—C2—C7—C6 | −177.07 (14) | C11—C12—C13—C14 | 1.5 (2) |
C5—C6—C7—C2 | −1.0 (2) | C10—C9—C14—C13 | −2.3 (2) |
N2—N1—C8—S2 | −170.63 (11) | N2—C9—C14—C13 | 179.88 (14) |
N2—N1—C8—S1 | 8.92 (19) | C12—C13—C14—C9 | 0.3 (2) |
C1—S1—C8—N1 | 179.22 (12) |
Cg1 and Cg2 are the centroids of the C2–C7 and C9–C14 rings, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1n···S2i | 0.88 (1) | 2.50 (1) | 3.3625 (14) | 169 (2) |
N2—H2n···S2ii | 0.88 (1) | 2.79 (2) | 3.5919 (13) | 152 (1) |
C11—H11···Cg1iii | 0.95 | 2.98 | 3.8594 (18) | 155 |
C5—H5···Cg2iv | 0.95 | 2.84 | 3.7005 (18) | 151 |
Symmetry codes: (i) −x+2, −y+1, −z+1; (ii) x+1, y, z; (iii) −x+5/2, y−1/2, −z+3/2; (iv) x−1, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | C15H16N2S2 |
Mr | 288.42 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 100 |
a, b, c (Å) | 5.7000 (1), 11.0136 (2), 22.7545 (4) |
β (°) | 95.198 (2) |
V (Å3) | 1422.60 (4) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 3.27 |
Crystal size (mm) | 0.22 × 0.14 × 0.08 |
Data collection | |
Diffractometer | Oxford Diffraction Xcaliber Eos Gemini diffractometer |
Absorption correction | Multi-scan (CrysAlis PRO; Agilent, 2011) |
Tmin, Tmax | 0.63, 0.77 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 15011, 2725, 2560 |
Rint | 0.022 |
(sin θ/λ)max (Å−1) | 0.615 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.035, 0.097, 1.03 |
No. of reflections | 2725 |
No. of parameters | 179 |
No. of restraints | 2 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.44, −0.23 |
Computer programs: CrysAlis PRO (Agilent, 2011), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006), publCIF (Westrip, 2010).
Cg1 and Cg2 are the centroids of the C2–C7 and C9–C14 rings, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1n···S2i | 0.876 (14) | 2.498 (14) | 3.3625 (14) | 169.3 (15) |
N2—H2n···S2ii | 0.877 (13) | 2.794 (16) | 3.5919 (13) | 151.9 (14) |
C11—H11···Cg1iii | 0.95 | 2.98 | 3.8594 (18) | 155 |
C5—H5···Cg2iv | 0.95 | 2.84 | 3.7005 (18) | 151 |
Symmetry codes: (i) −x+2, −y+1, −z+1; (ii) x+1, y, z; (iii) −x+5/2, y−1/2, −z+3/2; (iv) x−1, y+1, z. |
Footnotes
‡Additional correspondence author, e-mail: kacrouse@gmail.com.
Acknowledgements
Support for the project came from Universiti Putra Malaysia under their Research University Grant Scheme (grant No. 9174000) and from the Malaysian Ministry of Science, Technology and Innovation (grant No. 09–02-04–0752-EA001). We also thank the Ministry of Higher Education (Malaysia) for funding structural studies through the High-Impact Research scheme (UM.C/HIR/MOHE/SC/12).
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The study of hydrazinecarbodithioate derivatives, their coordination chemistry and bio-activities has been carried out in our laboratory for a number of years (Khoo et al. 2005; Chan et al. 2008; Ravoof et al., 2010; Paulus et al., 2011; Manan et al., 2012). In our efforts to expand the scope of these investigations, the title compound (I) was synthesized and characterized crystallographically.
In (I), Fig. 1, the central moiety is essentially planar with a r.m.s. deviation of the fitted atoms (S1,S2,N1,N2,C1 and C8) of 0.047 Å with the maximum deviations being 0.0709 (8) and -0.0711 (11) Å for the N2 and N1 atoms, respectively. The phenyl and o-tolyl rings lie out of this plane forming dihedral angles of 68.26 (4) and 65.99 (4)°, respectively. The o-tolyl ring is orientated to one side of the central plane as seen in the C8—N1—N2—C9 torsion angle of 111.24 (16)°, whereas the plane through the central atoms almost bisects the phenyl ring with the C8—S1—C1—C2 torsion angle being 176.89 (11)°.
The most prominent feature of the crystal packing is the formation of supramolecular chains along [100]. These are mediated through N—H···S hydrogen bonds involving the thione-S2 atom, Table 1. Thus, centrosymmetrically related molecules are connected into dimeric aggregates via eight-membered {···HNCS}2 synthons. These are connected to translationally related dimeric aggregates via weaker N—H···S hydrogen bonds leading to 10-membered {···HNNH···S}2 synthons. The chain has a step topology and comprises alternating {···HNCS}2 and {···HNNH···S}2 synthons, Fig. 2. The chains are consolidated into a three-dimensional architecture by C—H···π interactions, Fig. 3 and Table 1.