title: 5-(4-Pyrid-yl)-1,3,4-thia-diazol-2-amine.
abstract: 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.
authors.affiliation: Department of Applied Chemistry, College of Science, Nanjing University of Technology, No. 5 Xinmofan Road, Nanjing, Nanjing 210009, People's Republic of China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Wang
authors.forename: Rong
authors.initials: R
authors.lastname: Wan
authors.forename: Feng
authors.initials: F
authors.lastname: Han
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
authors.forename: Bin
authors.initials: B
authors.lastname: Wang