Abstract

SYNTHESIS AND PHYSICOCHEMICAL STUDIES OF MIXED LIGAND COMPLEXES OF CO (II) WITH OXYGEN AND NITROGEN DONOR LIGANDS

*P.R. Shirode, P.M. Yeole

Abstract

The mixed ligand complexes of the type [ML1L2]Cl2. Where M=Co (II), AND L1=Pyruvic acid semicarbazone L2= Acetone semicarbazone, Acetophenone semicarbazone,Benz aldehyde semicarbazone, Cyclohexanone semicarbazone, O-hydroxy acetophenone 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 to metal ion.

Keywords: Mixed ligand, Pyruvic acid semicarbazone, Benz aldehyde semicarbazone, transition metals.