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.
Key words: 1,10-phenanthroline, Schiff base, mixed-ligand, transition metal (II) complexes.
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