Synthesis And Spectroscopic Properties Of Some Mixed-Ligand Complexes Of Nickel (II), Copper (II), Zinc (II) And Palladium (II) With Biologically Active Nitrogen-Sulphur Containing Molecules

Abstract

The reaction of the biologically active complexes, chloro-2-acetylpyridinehyd-razinecarbothiopiperidinamide metal (II) and chloro-2-acetylpyridinecar-bothiomorpholinamide metal (11),^, (M=Ni (II), Cu (II), Zn (II) and Pd (II)) with S-methylhydrazinecarbodithioate Schiff bases, 1J (Ri=R,=CH3; Ri=H, R:;=Ph) have been studied. A series of mixed-ligand metal (II) complexes, III, were isolated and characterized using elemental analysis, infrared, ultra-violet-visible, 'Hnmr and esr spectra. The spectral results of the mixed-ligand complexes, III, are compared with those of the reactants I and II and used to provide evidence concerning the coordination geometry of the central metal in these complexes.