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E-Journal of Chemistry
Volume 8, Issue 3, Pages 1174-1179
http://dx.doi.org/10.1155/2011/612847

Biological Important Ni(II) Ternary Complexes Derived from 2-Substituted Benzothiazoles and Amino Acids

Narendra Pal, Mahesh Kumar, and Gita Seth

Department of Chemistry, University of Rajasthan, Jaipur, India

Received 7 October 2010; Accepted 16 December 2010

Copyright © 2011 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Biological important ternary complexes of the type [NiCl(L-L) (A-A)(H2O)] and [Ni(L-L´)(A-A)(H2O)2], where A-A = Glycine (Gly), Alanine (Ala), L-L = 2-(2´-aminophenyl)benzothiazole (APBT) and L-L´ = 2-(2´-hydroxyphenyl)benzothiazole (HPBT), 2-(2´-mercaptophenyl)benzothiazole (MPBT) have been synthesized. These complexes have been characterized by elemental analysis, molecular weight determination, conductivity, magnetic measurements, infrared, electronic spectral and TGA studies. On the basis of above described studies an octahedral geometry has been suggested for these complexes. All these complexes are coloured, thermally stable, monomeric and non-electrolytic in nature. The ligands and their metal complexes were tested against pathogenic fungi Aspergillus niger and Fusarium oxysporum to assess their fungicidal properties, the antifungal activity data reveals that these metal complexes are found more fungitoxic than the parent ligands.