(Dimethyl sulfoxide-κO)bis­(thio­semicarbazide-κ2 N 1,S)zinc dipicrate dimethyl sulfoxide solvate monohydrate

The title complex, [Zn(CH(5)N(3)S)(2)(C(2)H(6)OS)](C(6)H(2)N(3)O(7))(2)·C(2)H(6)OS·H(2)O, is composed of a [Zn(thio-semi-carbazide)(2)(DMSO)](2+) cation (where DMSO is dimethyl sulfoxide), and two picrate anions. In the asymmetric unit, there is also a solvent mol-ecule of DMSO and a water mol-ecule of crystallization. In the cation, the Zn(II) atom is five-coordinated in a distorted square-pyramidal geometry. It coordinates to the O atom of a DMSO mol-ecule and to the S and one N atom of two thio-semicarbazide mol-ecules, which behave as bidentate ligands coordinating in a trans arrangement. In the crystal, a number of N-H⋯O, O-H⋯O and N-H⋯S hydrogen bonds link the mol-ecules into two-dimensional networks. These networks are further linked via weak C-H⋯O inter-actions, forming a three-dimensional arrangement. Positional disorder in one methyl group of the coordinated DMSO molecule and in the two picrate anions was observed.