Abstract

SYNTHESIS AND CHARACTRISATION OF NEW MN (II), FE (III), CO (II), METAL COMPLEXES DERIVED FROM 2-HYDROXY 3-METHOXY BENZALDEHYDE AND DHA

Shyam R. Annapure*

ABSTRACT

New Solid asymmetrical complexes of Mn (II), Fe (III), and Co (II) of Schiff bases are synthesized from, 3-Acetyl-6-methyl-pyran-2, 4-dione (DHA), 4-methyl benzene 1,2-diamine and 2-hydroxy 3-methoxy benzaldehyde. The structures of ligands and complexes are characterized by thermal analysis, X-ray diffraction,1H-NMR, mass, IR,UV-visible spectra, elemental analysis, magnetic susceptibility, and conductometry. Thermal study carried out to calculate kinetic parameter through TGA/DSC. The ligand field parameters have been characterized for Mn (II), Fe (III), Co (II) complexes, which recommend high spine octahedral geometry. The x-ray diffraction data proposes monoclinic crystal system for all three complexes. The ligand and their metal complexes were subjected for fungicidal activity against Trichoderma and Aspergillus Niger and antibacterial activity against Escherichia coli and Staphylococcus aureus.

Keywords: Dehydroacticacid, Powder X-ray diffraction, Thermal analysis Antimicrobial activity.