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Synthesis, characterization and antimicrobial activities of some transition metal complexes of biologically active asymmetrical tetradentate ligands

Author(s): V.L.Borde, C.D.Thakur, S.G.Shankarwar, A.G.Shankarwar

The synthesized metal complexes Cr(III), Fe(III), Co(II),Ni(II), Cu(II) and Zn(II) of Schiff base have been condensing by Dehydroacetic acid, cinnamaldehyde and 6-methyl-1,3,5-triazine-2,4-diamine. The metal complexes were obtained as a result of interaction of Schiff base ligand. Schiff base have been synthesized and characterized on the basis of elemental analysis, Infrared, 1H NMR analysis,magnetic susceptibilitymeasurements, conductrometry, electronic spectra, X-ray diffraction. The ligand and its complexes were screened for their antibacterial activity against bacterium Staphylococcus aurious, B.subtilis (Gram positive) and Escherichia coli, K.pneumonae (Gram negative). The result indicated that the complexes exhibited good antibacterial activities. The Schiff base commonly coordinates through the oxygen atom of phenolic OH group and the nitrogen atom of azomethine group,which is confirmed by IR spectral data. Further conclusive evidence of the co-ordination of the Schiff bases with the metal ions was shown by the appearance of new bands due to (M-N) and (MO) in the metal complexes.

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