SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL EVALUATION OF MIXED LIGAND COMPLEXES OF MANGANESE(II), COBALT(II), COPPER(II), NICKEL(II) AND MERCURY(II) WITH 1,10-PHENANTHROLINE AND A BIDENTATE SCHIFF BASE

摘要

A Schiff base (L, [2,2'-(1E,1'E)-(ethane-1,2-diylbis(azan-1-yl-1-ylidene))bis(methan-1-yl-1-ylidene)dibenzaldehyde]) has been synthesized by reacting o -phathaldehyde with ethylenediamine and characterized with spectral studies and elemental analysis. Mixed ligands complexes of Mn (II), Co (II), Cu (II), Ni (II) and Hg (II) with 1,10-phenanthroline and the Schiff base have been prepared and characterized. The results indicated tetrahedral and square planar structure for the complexes. Biological activity of the ligands and complexes against four selected bacteria viz. Staphylococcus aureus , Bacillus cereus , Escherichia coli and Pseudomonas were also examined. Some of the complexes exhibit good antibacterial activities.