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Abstract

PREPARATION AND PROPERTIES OF BINUCLEAR SCHIFF BASE COMPLEXES OF MN (II) FE (II) AND ZN(II)INTER-COMPLEX REACTION

Dr. Mahananda A. Raut* and Dr. Archana A. Kachare

ABSTRACT

Homo and hetero binuclear Schiff base complexes of Fe(II),Zn (II) and Mn (II) were prepared by inter-complex reaction between the corresponding metal complexes of 2-hydroxy1- napthaldehyde and 2- amino 3-hydroxy pyridine. The complexes were characterized by elemental analysis and estimation of metals. Thermal behavior of the complexes was studied by TG-DTA analysis. Structures of the complexes were elucidated by spectroscopic methods like, infrared spectroscopy, UV-visible spectroscopy, mass spectrometry and 1HNMR spectroscopy. The powder X-ray diffraction study suggested crystalline nature of the complexes with tetragonal geometry. Magnetic moments and electronic spectra reveal tetrahedral structure of the complexes. Antibacterial activity of complexes were studied against Gram-positive bacteria, Staphylococcus aureus, Bacillus subtilis and Gramnegative bacteria, Salmonella typhi, Escherishia coli by agar cup method. Their antifungal activity was also tested against Aspergillus niger, Penicillium chrysogenum, Fusarium moneliforme and Aspergillus flavus by poison plate method using potato dextrose agar medium at one percent concentration. All complexes show considerable antimicrobial activity.

Keywords: Schiff base, inter-complex reaction, binuclear complex, biological activity.


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