REACTIVITY OF SOME COORDINATED LIGANDS CONTAINING SULFUR TOWARDS NUCLEOPHILIC-SUBSTITUTION REACTIONS .3. REACTION OF [(1-PHENYLETHANEDIYLIDINE BIS-S-METHYLHYDRAZINECARBODITHIOATE) NNS'S'(-2)] NICKEL(II) WITH PRIMARY AND SECONDARY-AMINES AND CYCLIZATION OF THE HYDRAZINE DERIVATIVE WITH BETA-DIKETONES

A series of nickel(II) complexes with unsymmetric NNSS quadridentate S chiff bases containing both hydrazinecarbothioamidate and S-methylhydr azinecarbodithioate residues have been prepared by the nucleophilic di splacement of one SCH3 group from [(1-phenyl-1,2-ethanediylidine bis(S -methyl hydrazine carbodithioate) NNSS(-2)]nickel(II) with primary and secondary amines. The N-diethyl substituted complexes of palladium(II ) and platinum(II) have been similarly prepared. The monohydrazine nic kel(II) complex has been also prepared and its condensation with acety lacetone and benzoylacetone to the corresponding pyrazoles is also dis cussed. The electron impact mass spectral studies suggest the preferen tial displacement of the SCH3 group on the carbon atom directly conjug ated to the phenyl group. The infrared, ultraviolet and visible absorp tion spectra as well as the H-1 NMR spectra of the newly prepared comp lexes are discussed.