Synthesis and characterization of manganese(II), cobalt(II), nickel(II), copper(II) and zinc(II) complexes with 2-[2ʹ-hydroxy salicylidene 5ʹ-(4ʹ-phenyl,2ʹʹ-thiazolylazo)]benzoic acid and 2-[2'-hydroxy salicylidene 5ʹ-(4ʹʹ-phenyl, 2ʹʹ-thiazolylazo)] phenol

Abstract

Metal complexes of the type [M(L).2H₂O]₂ [L=2-[2'–hydroxy salicylidene 5ʹ-(4ʹ-phenyl,2ʹʹ-thiazolylazo)]benzoic acid (L₁) and 2-[2ʹ-hydroxysalicylidene 5'-(4"-phenyl-2"-thiazolylazo)] phenol (L₂)]; M= Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) have been synthesized and characterized by elemental analysis, magnetic susceptibility, molar conductance, TGA, X-ray diffraction and spectral studies. L₁ and L₂ acts as dibasic tetradentate ligands and the complexes appear to be octahedral. Antibacterial activities of ligands and their metal complexes have been determined against <i>Escherichia coli</i>,<i> Bacillus substilis, Klebsiella Pneumoniae,</i> <i>Pseudomonas aerogens, Salmonella paratyphi B, Staphylococcus</i> <i>aureus </i>and <i>Proteus vulgaris.</i>