MONO AND DI-NUCLEAR COMPLEXES OF Cu(II) AND Cu(I) WITH TETRADENTATE SCHIFF BASES. THEIR BIOLOGICAL ACTIVITY AND POTENTIAL APPLICATION

Abstract

Abstract

Complexes of Cu(II) with Schiff Bases ligand (SB) derived from the condensation of 5-chlorosalicylaldehyde and bidentate amines (o-phenylene, ethylene, propene, butene, pentene, hexene and heptene diamine), have been studied. The isolated complexes were characterized on the basis of elemental analysis, infrared spectra, electronic absorption spectra, molar conductance, thermogravimetric analysis, electron spin resonance, and magnetic susceptibility. The prepared complexes are compared with Cu(I) complexes of the same ligands (SB). It was observed that, Cu(II)-SB complexes, show para-magnetic behaviour with octahedral and pseduotetrahedral structures, while Cu(I) comlexes have pseduotetrahedral structures.The molar conductance values of the two types of complexes [Cu(II)-SB&Cu(I)-SB], showed different behavior, Cu(I)-SB, have good conductance values, whereas Cu(II)-SB adducts are nonconducting. It was observed that (SB) and their complexes with Cu(II) have antibacterial and antifungal activities whereas Cu(I)-SB complexes show no effects on bacteria or fungus. This work is also concerned with the study of the potential application of the complexes of Cu(I)-SB as pollutant gas absorbents.