SYNTHESIS, CHARACTERIZATION & ANTIMICROBIAL STUDIES OF BIMETALLIC COMPLEXES OF CU (II) & NI (II)-PYRIDINE-2-ALDOXIME WITH MG & CA METAL SALTS OF SOME ORGANIC ACIDS

Birendra Kumar*, Poonam, Vijay Kumar Gupta Asha Kumari and Kanchan Kumari

ABSTRACT

The Cu(II) and Ni(II)-pyridine-2-aldoxime, Ma(pyox)2 have been used as a complex ligand for the synthesis of a number of bimetallic complexes of the type [Ma(pyox)2.MbL2]. Ma(pyox)2 acting as a bidentate complexing agent, coordinating through O-atoms of oximino groups to Mg or Ca-metal salt(MbL2; where Mb = Mg or Ca, L = o-nitrophenol or 2,4-dinitrophenol). Stereochemistry of the complexes have been studied by elemental analysis, spectral data, conductance and magnetic moment measurements. Antimicrobial efficiency of the compounds has been screened against five different micro-organism. The antimicrobial results evidently show that the activity of the ligand/complex ligands became more pronounced when coordinated to the metal ions.

Keywords: Bimetallic complexes, Cu (II)/Ni(II) chelates, Pyridine-2-aldoxime, Organic acids, Spectral data & Antimicrobial activity.