Study of mixed ligand complexes of acetophenone semicarbazone

The mixed ligand complexes of the type [ML1L2] Cl2 have been synthesized, by the reactions of metal chlorides with two different ligands in 1:1:1 molar ratios. [Where M=Cr(III),Co(II), Ni(II) and Cu(II)] L1=Pyruvic acid semicarbazone and L2= Acetophenone semicarbazone. The resulting complexes 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 octahedral nature bonding through oxygen and nitrogen donor atoms.