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Paper Details

Spectroscopic characterization and thermal studies of bioactive nickel (II) and palladium (II) complexes with Schiff base ligands

Anant Prakash and Monika Agarwal

Journal Title:Journal of Chemical, Biological and physical sciences

The new series of nickel (II) and palladium (II) complexes with different bidentate Schiff base ligands have been prepared and characterized by various spectroscopic as well as thermal studies. An infrared spectrum indicates coordination of metal ions through azomethine nitrogen and acetate/nitrate ions. The presence of water molecule(s) in the complexes has been supported by TG/DTA studies. Mass spectrum explains the successive degradation of the molecular species in solution and justifies ML complexes. 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 complexes has been examined against the growth of bacteria in vitro to evaluate their anti-microbial potential. Molecular structure of the complexes has been optimized by MM2 calculations and suggests an octahedral/ square planar geometry.