Diaqua( 2,5-di-4-pyridyl-1,3,4-thiadiazole-kN2)bis(thiocyanato-kN)-nickel(II) dihydrate

In the title mononuclear complex, [Ni(NCS)(2)(C12H8N4S)(2)- H2O)(2)] center dot 2H(2)O, the Ni-II atom is located on an inversion center and is octahedrally coordinated by four N atoms from two 2,5-di- 4-pyridyl-1,3,4-thiadiazole ( bpt) ligands and two thiocyanate molecules forming the equatorial plane; the axial positions are occupied by two O atoms of coordinated water molecules. O - H center dot center dot center dot O, O - H center dot center dot center dot N and O - H center dot center dot center dot S hydrogen bonds, involving the uncoordinated water molecules, result in the formation of a sheet structure developing parallel to (021).