The Synthesis, Spectral and Antimicrobial Study of Heterobinuclear Complexes of Copper (II) Schiff Base with Alkali Metals Salts

Abstract

The condensation reaction of a primary amine with carbonyl compounds results in a Schiff base, which is effectively incorporated in the preparation of metal complexes. Herein, a series of hetero binuclear complexes have been synthesized of the general formula CuPS.ML, where PS = Schiff base prepared by condensation of salicylaldehyde and propylene diamine; ML = Li, Na or K salts of 2-nitrophenol; 2,4-dinitrophenol; 2,4,6- trinitrophenol & 1-nitroso-2-naphthol. The compounds are generally soluble in most of the organic solvents but insoluble in water. These complexes have been characterized by elemental analysis, IR spectra, UV-VIS spectra, magnetic measurement and molar conductance results. The low value of molar conductance of the complexes suggested the non-electrolyte nature of the complexes. The spectral analysis suggested that the bonding between copper (II) metal chelate and alkali metal, appeared through the dative bond through the phenolic oxygen atoms. The study also revealed the square planar structure of the complexes. Some of these complexes showed the antimicrobial activity on E. coli, S. aureus and C. albicans and so, these complexes may be considered as good antimicrobial agents.