Synthesis, characterization, electrochemical studies and antimicrobial activities of metal complexes
Metal complexes of Schiff base 4-[(2, 4-dihydroxy-benzylidene)-amino]-1, 5-dimethyl-2-phenyl-1, 2-dihydroxo-pyrazol-3-one (H2L) derived from condensation of 2,4-dihydroxybenzaldehyde and 4-aminoantipyrine were synthesized and characterized by FT-IR spectra, elemental analysis, 1H &13C NMR, mass spectra, UV–Visible, X-ray diffraction, molar conductance, magnetic moment and thermal analysis (TGA). The elemental analysis proved that the complexes have the general formulae of [M(HL)(X)(OH2)]2, where M = Cu(II); X = OAc−(1); NO3−(2); Cl−(3), M = Co(II) (4), Mn(II) (5); X = OAc and {[UO2(HL)]2.2(OAc)}(6). According to the FT-IR spectra data, it was found that the H2L ligand is coordinated to the metal ions in a tridentate donor sites of the nitrogen atom of azomethine group, the oxygen atom of phenolic group and the oxygen atom of carbonyl group.