Synthetic, spectral, thermal and antibacterial studies on copper(II) and zinc(II) complexes using NNO donor Schiff bases

Department of Chemistry, Shivaji University P. G. Centre, Solapur-413 002, India

E-mail: pramore@rediffmail.com Fax: 91-0217-2744770

Department of Chemistry, D. B. F. Dayanand College of Arts and Science, Solapur-413 002, India

Manuscript received 31 October 2002. revised 30 May 2003, accepted 11 July 2003

Copper(II) and zinc (II) complexes of Schiff bases, derived from substituted 2-aminothiazoles and o-hydroxyaldehydes, have been synthesized. The complexes are monomeric, possessing 1 : 2 (metal : lignad) stoichiometry and are non-electrolytic in nature. The Zn^II complexes have been characterized by thermal analyses and X-ray diffractometry. The kinetic parameters (n, E, Z, ∆S and G) estimated using Coats-Redfern, MacCallum-Tanner and Horowitz-Metzger methods are in good mutual agreement. The powder X-ray diffraction studies suggest a tetragonal crystal system for the Zn^II complexes. Antibacterial activities of the complexes have also been studied.