Bis[1,5-bis-(1H-indol-3-ylmethyl-ene)thio-carbazonato-κN,S]nickel(II) dimethyl sulfoxide disolvate

The Ni atom in the crystal structure of the centrosymmetric title compound, [Ni(C(19)H(15)N(6)S)(2)]·2C(2)H(6)OS, is N,S-chelated by the deprotonated Schiff bases in a square-planar geometry. The -CH=N-N=C(S)-NH-N=CH- frament is planar. The two indolyl -NH (donor) sites inter-act with dimethyl sulfoxide mol-ecules to furnish a layer motif.