Synthesis and Physico-chemical Studies of Mixed Ligand Complexes of Mn(II), Fe(III), Co(II), Ni(II) and Cu(II) with Acetophenone Semicarbazone and Cyclohexanone Semicarbazone

Abstract

The mixed ligand complexes of the type [M(L₁)(L₂)]Cl₂ (where M= Mn(II), Fe(III), Co(II), Ni(II) and Cu(II) and L₁ = acetophenone semicarbazone, L₂ = cyclohexanone semicarbazone) have been synthesized by the reactions of metal chlorides with two different semicarbazone compounds in 1:1:1 molar ratios. The resulting complexes have been characterized on the basis of elemental analysis, magnetic measurement, IR and electronic spectra, conductivity measurement. The metal complexes shows ratio 1:1:1 with metal, ligand L₁ and ligand L₂. The ligands acts as bidentate ligands and are bonded through oxygen and nitrogen to metal ion. The two co-ordination positions are occupied by two water molecules. The complexes have octahedral structure.