organic compounds
5-(Adamantan-1-yl)-N-methyl-1,3,4-thiadiazol-2-amine
aDepartment of Pharmaceutical Chemistry, College of Pharmacy, Salman bin Abdulaziz University, Alkharj 11942, Saudi Arabia, bDepartment of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia, cDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, and dChemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203 Jeddah, Saudi Arabia
*Correspondence e-mail: edward.tiekink@gmail.com
In the title compound, C13H19N3S, the methylamine substituent is coplanar with the thiadiazole ring to which it is attached [C—N—C—S torsion angle = 175.9 (2)°] and the amine H atom is syn to the thiadiazole S atom. Supramolecular chains along [101], sustained by N—H⋯N hydrogen bonding, feature in the crystal packing.
Related literature
For the biological activity of 1,3,4-thiadiazol-2-amine derivatives, see: Carvalho et al. (2008); Foroumadi et al. (1999), and of adamantane derivatives, see: Togo et al. (1968); El-Emam et al. (2004). For related structures, see: El-Emam et al. (2012); Almutairi et al. (2012). For the synthesis of the title compound, see: El-Emam & Lehmann (1994).
Experimental
Crystal data
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Data collection: CrysAlis PRO (Agilent, 2012); 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 for Windows (Farrugia, 2012) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536813009033/hg5305sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536813009033/hg5305Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536813009033/hg5305Isup3.cml
The title compound was prepared by dehydrative
of 1-(1-adamantylcarbonyl)-4-methylthiosemicarbazide using sulfuric acid at room temperature for 24 h as previously described (El-Emam & Lehmann, 1994). Single crystals were obtained by slow evaporation from its CHCl3:EtOH solution at room temperature; M.pt: 441–443 K.The C-bound H-atoms were placed in calculated positions [C—H = 0.96 to 0.98 Å, Uiso(H) = 1.2 or 1.5Ueq(C)] and were included in the
in the riding model approximation. The N-bound H-atom was refined with N—H = 0.88±0.01 Å.Derivatives of adamantane have long been known for their diverse biological activities including anti-viral activity against influenza (Togo et al., 1968) and HIV viruses (El-Emam et al., 2004). Moreover, 1,3,4-thiadiazole derivatives were reported to exhibit marked anti-trypanosomal (Carvalho et al., 2008) and anti-microbial activities (Foroumadi et al., 1999). In continuation of our interest in the chemical and pharmacological properties of adamantane derivatives, and as part of on-going structural studies of these (El-Emam et al., 2012; Almutairi et al., 2012), we report herein the X-ray crystallographic data of the title compound, (I).
In (I), Fig. 1, the five-membered ring is planar (r.m.s. deviation = 0.009 Å) and the methylamine substituent is co-planar: the C13—N3—C2—S1 torsion angle is 175.9 (2)°. The amine-H atom is syn to the thiadiazole-S1 atom. N—H···N hydrogen bonds feature in the crystal packing, leading to supramolecular chains along [1 0 1], Fig. 2 and Table 1. Chains pack with no specific intermolecular interactions between them. Globally, the
comprises alternating layers of hydrophilic and hydrophobic regions, Fig. 3.For the biological activity of 1,3,4-thiadiazol-2-amine derivatives, see: Carvalho et al. (2008); Foroumadi et al. (1999), and of adamantane derivatives, see: Togo et al. (1968); El-Emam et al. (2004). For related structures, see: El-Emam et al. (2012); Almutairi et al. (2012). For the synthesis of the title compound, see: El-Emam & Lehmann (1994).
Data collection: CrysAlis PRO (Agilent, 2012); cell
CrysAlis PRO (Agilent, 2012); data reduction: CrysAlis PRO (Agilent, 2012); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).C13H19N3S | F(000) = 536 |
Mr = 249.37 | Dx = 1.261 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 1515 reflections |
a = 10.4394 (12) Å | θ = 3.1–27.5° |
b = 13.0910 (13) Å | µ = 0.23 mm−1 |
c = 10.8871 (15) Å | T = 295 K |
β = 118.008 (16)° | Prism, colourless |
V = 1313.6 (3) Å3 | 0.30 × 0.20 × 0.10 mm |
Z = 4 |
Agilent SuperNova Dual diffractometer with an Atlas detector | 3027 independent reflections |
Radiation source: SuperNova (Mo) X-ray Source | 1975 reflections with I > 2σ(I) |
Mirror monochromator | Rint = 0.039 |
Detector resolution: 10.4041 pixels mm-1 | θmax = 27.6°, θmin = 3.1° |
ω scan | h = −13→13 |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2012) | k = −16→17 |
Tmin = 0.887, Tmax = 1.000 | l = −13→14 |
6791 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)] = 0.054 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.144 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0539P)2 + 0.1967P] where P = (Fo2 + 2Fc2)/3 |
3027 reflections | (Δ/σ)max < 0.001 |
159 parameters | Δρmax = 0.24 e Å−3 |
1 restraint | Δρmin = −0.22 e Å−3 |
C13H19N3S | V = 1313.6 (3) Å3 |
Mr = 249.37 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 10.4394 (12) Å | µ = 0.23 mm−1 |
b = 13.0910 (13) Å | T = 295 K |
c = 10.8871 (15) Å | 0.30 × 0.20 × 0.10 mm |
β = 118.008 (16)° |
Agilent SuperNova Dual diffractometer with an Atlas detector | 3027 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2012) | 1975 reflections with I > 2σ(I) |
Tmin = 0.887, Tmax = 1.000 | Rint = 0.039 |
6791 measured reflections |
R[F2 > 2σ(F2)] = 0.054 | 1 restraint |
wR(F2) = 0.144 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | Δρmax = 0.24 e Å−3 |
3027 reflections | Δρmin = −0.22 e Å−3 |
159 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. |
x | y | z | Uiso*/Ueq | ||
S1 | 0.21237 (6) | 0.64435 (5) | 0.41269 (6) | 0.0480 (2) | |
N1 | 0.45652 (19) | 0.66351 (15) | 0.62872 (19) | 0.0446 (5) | |
N2 | 0.43886 (18) | 0.75355 (15) | 0.55520 (19) | 0.0455 (5) | |
N3 | 0.2711 (2) | 0.83210 (16) | 0.3481 (2) | 0.0514 (5) | |
H3 | 0.1801 (12) | 0.8326 (19) | 0.2850 (19) | 0.047 (7)* | |
C1 | 0.3500 (2) | 0.60016 (19) | 0.5713 (2) | 0.0398 (5) | |
C2 | 0.3152 (2) | 0.75433 (18) | 0.4397 (2) | 0.0404 (5) | |
C3 | 0.3392 (2) | 0.49988 (18) | 0.6325 (2) | 0.0398 (5) | |
C4 | 0.4805 (3) | 0.4770 (2) | 0.7646 (3) | 0.0614 (7) | |
H4A | 0.5016 | 0.5321 | 0.8308 | 0.074* | |
H4B | 0.5598 | 0.4725 | 0.7420 | 0.074* | |
C5 | 0.4676 (3) | 0.3761 (2) | 0.8298 (3) | 0.0698 (9) | |
H5 | 0.5580 | 0.3627 | 0.9150 | 0.084* | |
C6 | 0.3426 (3) | 0.3824 (3) | 0.8635 (3) | 0.0744 (9) | |
H6A | 0.3359 | 0.3190 | 0.9062 | 0.089* | |
H6B | 0.3600 | 0.4373 | 0.9292 | 0.089* | |
C7 | 0.2019 (3) | 0.4013 (2) | 0.7331 (3) | 0.0614 (7) | |
H7 | 0.1221 | 0.4047 | 0.7564 | 0.074* | |
C8 | 0.2149 (3) | 0.5035 (2) | 0.6717 (3) | 0.0566 (7) | |
H8A | 0.2337 | 0.5575 | 0.7391 | 0.068* | |
H8B | 0.1242 | 0.5188 | 0.5896 | 0.068* | |
C9 | 0.3080 (3) | 0.4115 (2) | 0.5300 (3) | 0.0605 (7) | |
H9A | 0.3848 | 0.4073 | 0.5040 | 0.073* | |
H9B | 0.2175 | 0.4242 | 0.4465 | 0.073* | |
C10 | 0.2977 (3) | 0.3098 (2) | 0.5956 (3) | 0.0682 (8) | |
H10 | 0.2792 | 0.2540 | 0.5294 | 0.082* | |
C11 | 0.1735 (3) | 0.3176 (2) | 0.6301 (3) | 0.0675 (8) | |
H11A | 0.0840 | 0.3314 | 0.5459 | 0.081* | |
H11B | 0.1625 | 0.2533 | 0.6683 | 0.081* | |
C12 | 0.4399 (3) | 0.2912 (3) | 0.7263 (4) | 0.0807 (10) | |
H12A | 0.4358 | 0.2262 | 0.7671 | 0.097* | |
H12B | 0.5187 | 0.2882 | 0.7028 | 0.097* | |
C13 | 0.3567 (3) | 0.9237 (2) | 0.3810 (3) | 0.0619 (7) | |
H13A | 0.3160 | 0.9693 | 0.3028 | 0.093* | |
H13B | 0.4544 | 0.9068 | 0.4020 | 0.093* | |
H13C | 0.3570 | 0.9562 | 0.4602 | 0.093* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0374 (3) | 0.0496 (4) | 0.0422 (4) | −0.0049 (3) | 0.0063 (3) | 0.0015 (3) |
N1 | 0.0365 (9) | 0.0478 (12) | 0.0403 (11) | 0.0009 (9) | 0.0105 (8) | 0.0020 (9) |
N2 | 0.0361 (9) | 0.0460 (12) | 0.0435 (11) | −0.0023 (9) | 0.0096 (8) | 0.0033 (10) |
N3 | 0.0380 (10) | 0.0503 (13) | 0.0490 (13) | −0.0012 (10) | 0.0063 (9) | 0.0077 (11) |
C1 | 0.0314 (10) | 0.0487 (14) | 0.0366 (12) | 0.0015 (10) | 0.0138 (9) | −0.0020 (11) |
C2 | 0.0327 (10) | 0.0455 (14) | 0.0396 (12) | 0.0020 (10) | 0.0142 (9) | 0.0001 (11) |
C3 | 0.0366 (11) | 0.0435 (13) | 0.0388 (12) | 0.0010 (10) | 0.0171 (9) | 0.0007 (11) |
C4 | 0.0435 (13) | 0.0650 (18) | 0.0611 (17) | −0.0039 (13) | 0.0125 (12) | 0.0184 (14) |
C5 | 0.0500 (14) | 0.070 (2) | 0.0689 (19) | −0.0026 (15) | 0.0110 (14) | 0.0242 (17) |
C6 | 0.089 (2) | 0.081 (2) | 0.0559 (18) | −0.0179 (18) | 0.0364 (17) | 0.0018 (16) |
C7 | 0.0560 (15) | 0.073 (2) | 0.0647 (18) | −0.0040 (14) | 0.0364 (14) | 0.0026 (15) |
C8 | 0.0556 (14) | 0.0574 (17) | 0.0643 (17) | 0.0008 (13) | 0.0344 (13) | −0.0009 (14) |
C9 | 0.0785 (18) | 0.0535 (16) | 0.0597 (17) | −0.0018 (14) | 0.0408 (15) | −0.0035 (14) |
C10 | 0.095 (2) | 0.0474 (16) | 0.070 (2) | −0.0086 (16) | 0.0448 (18) | −0.0112 (15) |
C11 | 0.0611 (16) | 0.0589 (18) | 0.075 (2) | −0.0128 (15) | 0.0254 (15) | 0.0020 (16) |
C12 | 0.081 (2) | 0.066 (2) | 0.115 (3) | 0.0235 (18) | 0.062 (2) | 0.034 (2) |
C13 | 0.0534 (14) | 0.0537 (17) | 0.0642 (18) | −0.0072 (13) | 0.0157 (13) | 0.0063 (14) |
S1—C2 | 1.737 (2) | C6—H6B | 0.9700 |
S1—C1 | 1.747 (2) | C7—C11 | 1.495 (4) |
N1—C1 | 1.289 (3) | C7—C8 | 1.530 (4) |
N1—N2 | 1.388 (3) | C7—H7 | 0.9800 |
N2—C2 | 1.313 (3) | C8—H8A | 0.9700 |
N3—C2 | 1.346 (3) | C8—H8B | 0.9700 |
N3—C13 | 1.437 (3) | C9—C10 | 1.538 (4) |
N3—H3 | 0.872 (9) | C9—H9A | 0.9700 |
C1—C3 | 1.500 (3) | C9—H9B | 0.9700 |
C3—C4 | 1.530 (3) | C10—C11 | 1.513 (4) |
C3—C9 | 1.532 (3) | C10—C12 | 1.518 (4) |
C3—C8 | 1.545 (3) | C10—H10 | 0.9800 |
C4—C5 | 1.535 (4) | C11—H11A | 0.9700 |
C4—H4A | 0.9700 | C11—H11B | 0.9700 |
C4—H4B | 0.9700 | C12—H12A | 0.9700 |
C5—C12 | 1.511 (4) | C12—H12B | 0.9700 |
C5—C6 | 1.514 (4) | C13—H13A | 0.9600 |
C5—H5 | 0.9800 | C13—H13B | 0.9600 |
C6—C7 | 1.509 (4) | C13—H13C | 0.9600 |
C6—H6A | 0.9700 | ||
C2—S1—C1 | 87.21 (11) | C11—C7—H7 | 109.5 |
C1—N1—N2 | 114.59 (18) | C6—C7—H7 | 109.5 |
C2—N2—N1 | 111.34 (18) | C8—C7—H7 | 109.5 |
C2—N3—C13 | 119.4 (2) | C7—C8—C3 | 110.6 (2) |
C2—N3—H3 | 117.1 (16) | C7—C8—H8A | 109.5 |
C13—N3—H3 | 120.7 (16) | C3—C8—H8A | 109.5 |
N1—C1—C3 | 125.1 (2) | C7—C8—H8B | 109.5 |
N1—C1—S1 | 112.82 (18) | C3—C8—H8B | 109.5 |
C3—C1—S1 | 122.04 (16) | H8A—C8—H8B | 108.1 |
N2—C2—N3 | 123.8 (2) | C3—C9—C10 | 110.7 (2) |
N2—C2—S1 | 114.02 (17) | C3—C9—H9A | 109.5 |
N3—C2—S1 | 122.18 (16) | C10—C9—H9A | 109.5 |
C1—C3—C4 | 110.38 (18) | C3—C9—H9B | 109.5 |
C1—C3—C9 | 111.84 (19) | C10—C9—H9B | 109.5 |
C4—C3—C9 | 108.5 (2) | H9A—C9—H9B | 108.1 |
C1—C3—C8 | 110.08 (19) | C11—C10—C12 | 110.7 (2) |
C4—C3—C8 | 108.1 (2) | C11—C10—C9 | 108.1 (2) |
C9—C3—C8 | 107.8 (2) | C12—C10—C9 | 108.9 (2) |
C3—C4—C5 | 110.3 (2) | C11—C10—H10 | 109.7 |
C3—C4—H4A | 109.6 | C12—C10—H10 | 109.7 |
C5—C4—H4A | 109.6 | C9—C10—H10 | 109.7 |
C3—C4—H4B | 109.6 | C7—C11—C10 | 110.1 (2) |
C5—C4—H4B | 109.6 | C7—C11—H11A | 109.6 |
H4A—C4—H4B | 108.1 | C10—C11—H11A | 109.6 |
C12—C5—C6 | 109.6 (2) | C7—C11—H11B | 109.6 |
C12—C5—C4 | 108.4 (3) | C10—C11—H11B | 109.6 |
C6—C5—C4 | 109.8 (3) | H11A—C11—H11B | 108.1 |
C12—C5—H5 | 109.7 | C5—C12—C10 | 109.9 (2) |
C6—C5—H5 | 109.7 | C5—C12—H12A | 109.7 |
C4—C5—H5 | 109.7 | C10—C12—H12A | 109.7 |
C7—C6—C5 | 110.5 (2) | C5—C12—H12B | 109.7 |
C7—C6—H6A | 109.6 | C10—C12—H12B | 109.7 |
C5—C6—H6A | 109.6 | H12A—C12—H12B | 108.2 |
C7—C6—H6B | 109.6 | N3—C13—H13A | 109.5 |
C5—C6—H6B | 109.6 | N3—C13—H13B | 109.5 |
H6A—C6—H6B | 108.1 | H13A—C13—H13B | 109.5 |
C11—C7—C6 | 110.4 (3) | N3—C13—H13C | 109.5 |
C11—C7—C8 | 109.9 (2) | H13A—C13—H13C | 109.5 |
C6—C7—C8 | 108.0 (2) | H13B—C13—H13C | 109.5 |
C1—N1—N2—C2 | −0.7 (3) | C12—C5—C6—C7 | −58.7 (3) |
N2—N1—C1—C3 | −177.1 (2) | C4—C5—C6—C7 | 60.3 (3) |
N2—N1—C1—S1 | 1.3 (2) | C5—C6—C7—C11 | 58.9 (3) |
C2—S1—C1—N1 | −1.21 (18) | C5—C6—C7—C8 | −61.2 (3) |
C2—S1—C1—C3 | 177.24 (19) | C11—C7—C8—C3 | −59.0 (3) |
N1—N2—C2—N3 | −179.5 (2) | C6—C7—C8—C3 | 61.4 (3) |
N1—N2—C2—S1 | −0.3 (2) | C1—C3—C8—C7 | 179.5 (2) |
C13—N3—C2—N2 | −5.0 (4) | C4—C3—C8—C7 | −59.9 (3) |
C13—N3—C2—S1 | 175.9 (2) | C9—C3—C8—C7 | 57.3 (3) |
C1—S1—C2—N2 | 0.84 (18) | C1—C3—C9—C10 | 179.9 (2) |
C1—S1—C2—N3 | −180.0 (2) | C4—C3—C9—C10 | 57.9 (3) |
N1—C1—C3—C4 | −6.8 (3) | C8—C3—C9—C10 | −58.9 (3) |
S1—C1—C3—C4 | 174.97 (17) | C3—C9—C10—C11 | 61.2 (3) |
N1—C1—C3—C9 | −127.7 (2) | C3—C9—C10—C12 | −59.1 (3) |
S1—C1—C3—C9 | 54.0 (3) | C6—C7—C11—C10 | −58.0 (3) |
N1—C1—C3—C8 | 112.5 (2) | C8—C7—C11—C10 | 60.9 (3) |
S1—C1—C3—C8 | −65.8 (2) | C12—C10—C11—C7 | 57.7 (3) |
C1—C3—C4—C5 | 178.1 (2) | C9—C10—C11—C7 | −61.5 (3) |
C9—C3—C4—C5 | −59.0 (3) | C6—C5—C12—C10 | 57.9 (3) |
C8—C3—C4—C5 | 57.7 (3) | C4—C5—C12—C10 | −61.9 (3) |
C3—C4—C5—C12 | 61.2 (3) | C11—C10—C12—C5 | −57.8 (3) |
C3—C4—C5—C6 | −58.5 (3) | C9—C10—C12—C5 | 61.0 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3···N1i | 0.87 (1) | 2.15 (1) | 3.021 (3) | 179 (2) |
Symmetry code: (i) x−1/2, −y+3/2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | C13H19N3S |
Mr | 249.37 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 295 |
a, b, c (Å) | 10.4394 (12), 13.0910 (13), 10.8871 (15) |
β (°) | 118.008 (16) |
V (Å3) | 1313.6 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.23 |
Crystal size (mm) | 0.30 × 0.20 × 0.10 |
Data collection | |
Diffractometer | Agilent SuperNova Dual diffractometer with an Atlas detector |
Absorption correction | Multi-scan (CrysAlis PRO; Agilent, 2012) |
Tmin, Tmax | 0.887, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6791, 3027, 1975 |
Rint | 0.039 |
(sin θ/λ)max (Å−1) | 0.651 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.054, 0.144, 1.04 |
No. of reflections | 3027 |
No. of parameters | 159 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.24, −0.22 |
Computer programs: CrysAlis PRO (Agilent, 2012), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 2012) and DIAMOND (Brandenburg, 2006), publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3···N1i | 0.872 (9) | 2.149 (10) | 3.021 (3) | 179 (2) |
Symmetry code: (i) x−1/2, −y+3/2, z−1/2. |
Footnotes
‡Additional correspondence author, e-mail: elemam5@hotmail.com.
Acknowledgements
The financial support of the Deanship of Scientific Research, Salman bin Abdulaziz University, Alkharj, Saudi Arabia, is greatly appreciated. We also thank the Ministry of Higher Education (Malaysia) for funding structural studies through the High-Impact Research scheme (UM.C/HIR/MOHE/SC/03).
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.
Derivatives of adamantane have long been known for their diverse biological activities including anti-viral activity against influenza (Togo et al., 1968) and HIV viruses (El-Emam et al., 2004). Moreover, 1,3,4-thiadiazole derivatives were reported to exhibit marked anti-trypanosomal (Carvalho et al., 2008) and anti-microbial activities (Foroumadi et al., 1999). In continuation of our interest in the chemical and pharmacological properties of adamantane derivatives, and as part of on-going structural studies of these (El-Emam et al., 2012; Almutairi et al., 2012), we report herein the X-ray crystallographic data of the title compound, (I).
In (I), Fig. 1, the five-membered ring is planar (r.m.s. deviation = 0.009 Å) and the methylamine substituent is co-planar: the C13—N3—C2—S1 torsion angle is 175.9 (2)°. The amine-H atom is syn to the thiadiazole-S1 atom. N—H···N hydrogen bonds feature in the crystal packing, leading to supramolecular chains along [1 0 1], Fig. 2 and Table 1. Chains pack with no specific intermolecular interactions between them. Globally, the crystal structure comprises alternating layers of hydrophilic and hydrophobic regions, Fig. 3.