5-(4-Pyridyl)-1,3,4-thiadiazol-2-amine
نویسندگان
چکیده
The title compound, C(7)H(6)N(4)S, was synthesized by reacting pyridine-4-carboxylic acid and thio-semicarbazide. The asymmetric unit contains two independent mol-ecules, which present different conformations, the dihedral angles between the thia-diazole and pyridine rings being 18.2 (2) and 30.3 (2)°. In the crystal, inter-molecular N-H⋯N hydrogen bonds involving the amine groups as donors link mol-ecules into a two-dimensional framework.
منابع مشابه
5-(3-Pyridyl)-1,3,4-thiadiazol-2-amine
The title compound, C(7)H(6)N(4)S, was synthesized by reacting pyridine-3-carboxylic acid and thio-semicarbazide. The dihedral angle between the planes of the thia-diazole and pyridine rings is 32.42 (14)°. In the crystal structure, inter-molecular N-H⋯N inter-actions link the mol-ecules into a three-dimensional network, forming R(2) (2)(8) ring motifs. π-π contacts between thia-diazole rings [...
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The title compound, C(16)H(12)ClN(3)S, was synthesized by the reaction of 5-(4-methyl-phen-yl)-1,3,4-thia-diazol-2-amine and 4-chloro-benzaldehyde. The thia-diazole ring is essentially planar with mean deviation of 0.0042 Å.
متن کامل5-({3-[(5-Amino-1,3,4-thiadiazol-2-yl)sulfanylmethyl]benzyl}sulfanyl)-1,3,4-thiadiazol-2-amine
In the title compound, C(12)H(12)N(6)S(4), the two terminal thia-diazole rings are twisted with respect to the central benzene ring, making dihedral angles of 54.28 (4) and 76.56 (3)°. The dihedral angle between the two thia-diazole rings is 27.77 (4)°. Inter-molecular N-H⋯N hydrogen bonds stabilize the crystal packing, linking the mol-ecules into a tape along the b axis.
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The structures of the 1:1 co-crystalline adduct C8H6BrN3S·C7H5NO4, (I), and the salt C8H7BrN3S(+)·C7H3N2O7 (-), (II), obtained from the inter-action of 5-(4-bromo-phen-yl)-1,3,4-thia-diazol-2-amine with 4-nitro-benzoic acid and 3,5-di-nitro-salicylic acid, respectively, have been determined. The primary inter-species association in both (I) and (II) is through duplex R (2) 2(8) (N-H⋯O/O-H⋯O) or...
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The title compound, C(20)H(22)Cl(2)N(3)O(4)PS, was synthesized by the reaction of N-(4-methoxy-benzyl-idene)-5-(2,4-dichloro-phenyl)-1,3,4-thia-diazol-2-amine and diethyl phosphite. In the crystal, inter-molecular C-H⋯O and N-H⋯O hydrogen bonds link the mol-ecules.
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