Abstract

SYNTHESIS AND CHARACTERIZATION OF MIXED IGAND COMPLEXES OF O, N AND S DONAR LIGANDS

P. R. Shirode*, R. K. Agrawal and P. M. Yeole

Abstract

The mixed ligand complexes of the type [ML1L2]Cl2. Where M=Cr(III), Mn(II), Co(II),Ni(II) and Cu(II) with L1=Pyruvic acid thiosemicarbazone L2= Cyclohexanone semicarbazone have been synthesized, by the reactions of metal chlorides with two different semicarbazones in 1:1:1 molar ratios. The resulting products have been characterized on the basis of elemental analysis, magnetic measurement, IR and Electronic spectra, conductivity measurement, thermal analysis, antimicrobial activities. The metal complexes show ratio 1:1:1 with metal, ligand L1 and ligand L2.The ligands are bonded through oxygen and nitrogen and sulphur to metal ion.

Keywords: Mixed ligand, Pyruvic acid thiosemicarbazone, cyclohexanone semicarbazone, transition metals.