Tetraaqua(2,2′-diamino-4,4′-bi-1,3-thiazole-κ2N3,N3′)nickel(II) bis(pyridine-2,6-dicarboxylato-κ3O2,N,O6)nickel(II) trihydrate

The crystal structure of the title compound, [Ni(C6H6N4S2)(H2O)4][Ni(C7H3NO4)2]·3H2O, consists of NiII complex cations, NiII complex anions and lattice water molecules. The NiII ions in both the complex cation and anion assume a distorted octahedral coordination geometry. O—H...O, N—H...O and C—H...S hydrogen bonds occur in the crystal structure