(Dimethyl sulfoxide-κO)bis­(thio­semicarbazide-κ(2) 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(thio­semi­carbazide)(2)(DMSO)](2+) cation (where DMSO is dimethyl sulfoxide), and two picrate anions. In the asymmetric unit, there is also a solvent mol­ecule of DMSO and a water mol­ecule 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 mol­ecule and to the S and one N atom of two thio­semicarbazide mol­ecules, 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 mol­ecules into two-dimensional networks. These networks are further linked via weak C—H⋯O inter­actions, forming a three-dimensional arrangement. Positional disorder in one methyl group of the coordinated DMSO molecule and in the two picrate anions was observed.