Synthesis, characterization and superoxide dismutase activity of some octahedral nickel(II) complexes

摘要

Four new mixed ligand nickel(II) complexes viz., [Ni(tren)(phen)](ClO4)(2) (1), [Ni(tren)(bipy)]ClO4)(2) (2), [Ni(SAA)(PMDT)] center dot 2H(2)O (3) and [Ni(SAA)(TPTZ)] (4) (tren = tris(2-aminoethylamine), phen = 1,10-phenanthroline, bipy = 2,2'-bipyridine, SAA = salicylidene anthranilic acid, PMDT = N,N,N',N '',N ''-pentamethyldiethylenetriamine, TPTZ = 2,4,6-tri(2-pyridyl)-1,3,5-triazine) have been synthesized and characterized by means of elemental analysis, spectroscopic, magnetic susceptibility and cyclic voltammetric measurements. Single crystal X-ray analysis of [Ni(tren)(phen)](ClO4)(2) (1) and [Ni(SAA)(PMDT)] center dot 2H(2)O (3) has revealed the presence of a distorted octahedral geometry. Superoxide dismutase activity of these complexes has also been measured. (c) 2006 Elsevier Ltd. All rights reserved.