title: 2,2'-Bi-1,3,4-thia-diazole-5,5'-diamine tetra-hydrate.
abstract: In the title compound, C(4)H(4)N(6)S(2)·4H(2)O, the complete organic mol-ecule is generated by crystallographic twofold symmetry and the dihedral angle between the aromatic rings is 10.24 (3)°. In the crystal, inter-molecular N-H⋯N, N-H⋯O, O-H⋯N and O-H⋯O hydrogen bonds and aromatic π-π stacking inter-actions [centroid-centroid separations = 3.530 (3) and 3.600 (3) Å] are observed.
authors: Department of Chemistry and Centre for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
authors: Chaveng
authors: C
authors: Pakawatchai
authors: Saowanit
authors: S
authors: Saithong
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