CHARACTRISATION OF SYNTHESIZED NI (II), CU (II) METAL COMPLEXES AND ANTIOXIDANT, ANTIMICROBIAL STUDY
Shyam R. Annapure*
ABSTRACT
Solid complexes of Ni (II), and Cu (II) of asymmetrical Schiff bases are synthesized from 4-methylbenzen-1, 2-diamine, 3-Acetyl-6-methyl-pyran-2, 4-dione (DHA) and 5-bromo Salicylaldehyde. The structures of ligands and complexes are characterized by elemental analysis, UV-visible spectra, 1H-NMR, mass, IR, thermal analysis, X-ray diffraction, magnetic susceptibility, and conductometry. Thermal behavior (TG-DSC) of the complexes were studied. The ligand field parameters have been characterized for Ni (II), Cu (II) complexes, which approve square planar geometry. The x-ray diffraction data suggests monoclinic crystal system for both 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. Antioxidant property is investigated by DPPH, among two, Cu (II) complex is found more potent.
Keywords: Antioxidant, Antimicrobial activity, X-ray, Thermal analysis, Dehydroacetic acid.
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