Microwave Assisted Synthesis, Spectroscopic, Thermal and Antimicrobial Studies of Some Transition Metal Complexes of Schiff Base Ligands Containing Thiazole Moiety

Some new Schiff base metal complexes of Cr(III), Co(II), Ni(II) and Cu(II) derived from N-(4-chlorobenzylidene)-5-methyl-1,3-thiazol-2-amine (CBAM) and N-[4- (dimethylamino)benzylidene]-6-nitro-1,3-benzothiazol-2-amine (DBAT) have been synthesizedby conventional as well as microwave methods. These compounds have been characterized by elemental analysis, FT-IR, FAB-mass, molar conductance, electronic spectra, ESR, magnetic susceptibility, thermal, electrical conductivity and XRD analysis. The complexes exhibit coordination number 4 or 6. The Schiff base and metal complexes show a good activity against the Gram-positive bacteria; Staphylococcus aureus and Gram-negative bacteria; Escherichia coli and fungi Aspergillus niger and Candida albicans. The antimicrobial results also indicate that the metal complexes are better antimicrobial agents as compared to the Schiff bases.