Diaqua(2,2'-diamino-4,4'-bi-1,3-thiazole)oxosulfatovanadium(IV) tetrahydrate.

The title compound, [VO(SO(4))(C(6)H(6)N(4)S(2))(H(2)O)(2)].4H(2)O, displays a distorted octahedral coordination geometry. The 2,2'-diamino-4,4'-bithiazole ligand is present in the usual chelating bidentate mode. The sulfate ligand coordinates in a monodentate fashion to the V atom. A large displacement of the V atom from the equatorial plane towards the oxo group correlates with the strong V=O double bond. In the crystal structure, a three-dimensional supramolecular network is formed by hydrogen bonds.