and Pb(II) complexes of two symmetrical Schiff bases have been
synthesized and characterized by various physico-chemical
studies. The spectroscopic data(IR,1H NMR)
indicates coordination of metal ions through azomethine
nitrogen and acetate/chloride ions. Mass spectrum explains the successive
degradation of the molecular species in solution and justifies M:L:: 1:1 complexes. Molecular structure of the complexes has
been optimized by MM2 calculations and suggests a tetrahedral geometry. Kinetic
and thermodynamic parameters were computed from the thermal data using Coats
and Redfern method, which confirm first order kinetics.
The bio-efficacy of the ligands and their complexes has been examined against
the growth of bacteria in vitro to
evaluate their anti-microbial potential.