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5-Amino-1,3,4-thia-diazol-2(3H)-one.

ABSTRACT: The asymmetric unit of the title compound, C(2)H(3)N(3)OS, contains three independent mol-ecules which are essentially planar, with r.m.s. deviations of 0.011?(2)-0.027?(2)?Å from the mean plane defined by the seven non-H atoms. In the crystal, N-H?N and N-H?O hydrogen bonds link the mol-ecules into a sheet parallel to the (111) plane.

SUBMITTER: Kang SK

PROVIDER: S-EPMC3344135 | biostudies-other | 2012 Apr

REPOSITORIES: biostudies-other

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5-Meth-oxy-1,3,4-thia-diazol-2(3H)-one.

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5-(4-Pyrid-yl)-1,3,4-thia-diazol-2-amine.

Project description: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.

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