Synthesis, characterization and biological studies of Co(II), Ni(II), Cu(II) and Zn(II) complexes with bidentate Schiff bases derived by heterocyclic ketone

A series of metal complexes of Co(II), Ni(II), Cu(II) and Zn(II) have been synthesized with newly prepared biologically active ligands. These ligands were prepared by the condensation of 4-amino-5-mercapto-3-methyl-s-triazole (AMMT), 4-Amino-3-ethyl-5-mercapto-s-triazole (AEMT) with 2-acetylpyridine. The structure of the complexes have been proposed by elemental analyses, spectroscopic data i.e. IR, 1H NMR, electronic and magnetic measurements. Thermal studies of the complexes are also reported. Antibacterial activities of 10 complexes have been studied in vitro. Heterocyclic bidentate Schiff bases were associated with substantially higher antibacterial activities than some commercial antibiotics.

Graphical abstractA series of metal complexes of Co(II), Ni(II), Cu(II) and Zn(II) have been synthesized by 1,2,4-triazole and 2-acetylpyridine. The structures of the complexes have been proposed on the bases of various physico-chemical techniques. Antibacterial activities of few complexes have been studied.Figure optionsDownload full-size imageDownload as PowerPoint slide