Table of Contents
International Journal of Inorganic Chemistry
Volume 2014, Article ID 736538, 22 pages
http://dx.doi.org/10.1155/2014/736538
Research Article

Characterization of Complexes Synthesized Using Schiff Base Ligands and Their Screening for Toxicity Two Fungal and One Bacterial Species on Rice Pathogens

1Agarwal Siksha Samiti, Charminar, Hyderabad 500 002, India
2Shadan PG Institute, Khairatabad, Hyderabad 500 001, India
3Centre for Materials for Electronics Technology (C-MET), IDA Phase III, Cherlapally (HCL PO), Hyderabad 500 051, India

Received 22 February 2014; Revised 8 May 2014; Accepted 9 May 2014; Published 18 September 2014

Academic Editor: Alfonso Castiñeiras

Copyright © 2014 T. Mangamamba et al. 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

Coordination complexes with metal ions Cu(II), Ni(II), Co(II), Fe(III), Mn(II), Cr(III), and VO(II) with six ligands formed by condensation products using azides and aldehydes or ketones are characterized. Both the ligands and the complexes synthesized are characterized by C, H, N, Cl and metal analyses, IR, UV-Vis, TGA, and magnetic susceptibility for tentative structure proposal. Several of them are screened for their toxicity (i.e., physiological activity) against fungal species Rhizoctonia solani and Acrocylindrium oryzae and a bacterium, Xanthomonas oryzae on rice pathogens. The study shows that the observed physiological activity is enhanced for the metal complexes as compared to the simple metal salts or ligands, except in the case of L3 or HAEP ligand, where the free –OH and –NH2 groups on the ligand seemed to have inhibited the activity. It is also observed that the order of activity has a dependence on the increased atomic weight of the metal ion in use. In some cases, especially the VO(II) complexes, they are found to be better than the standards in use, both for the fungicides and for the bactericide.