Abstract

Rezan Ali Saleh*, Hikmat Ali Mohammad and Salim Najm Aldin Saber

DOI : http://dx.doi.org/10.13005/ojc/360506

The mixing of one mole of 2,2'-bipyridine-3,3'-dicarboxylic acid (bpdc) with two mole of potassium hydroxide (KOH) in methanol were refluxed for (half h), followed by addition of one mole methanol solution of MCl2.nH2O (where M= Co, Ni or Cu). The mixture was refluxed for (2 h) to give colored complexes of the metal ions of [M(bpdc)(H2O)4]. The [M(bpdc)(H2O)4] were reacted with one mole of 2-Mercapto-5-phenyl-1,3,4-oxadiazole (phozSH) producing the colored mixed ligand complexes with general formula [M(bpdc)(phozSH)(H2O)3] in which the metal ions coordinated to the ligand through O-atoms of carboxyl group in (bpdc) and N-atom of (phozSH) ligand. The ligands and complexes are well identified by using Furrier transform infrared spectroscopy, 1H-NMR, 13C-NMR, Electronic spectroscopy, CHNS analysis, Melting point, conductivity measurement. The Antioxidant activity were screened for all the complexes by the use of 2, 2-diphenyl-1- picrylhydrazyl (DPPH) method.

Antioxidant Activity; Bipyridine; Cobalt(II); Copper(II); Nickel(II); Oxadiazole

[ View HTML Full Text]