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Synthesis, structural, characterization, spectral studies and antimicrobial activities ofCobalt(II) andNickel(II) complexeswith azo dye ligand

V.A.Modhavadiya

The solid complexes of Co(II) and Ni(II) with azo dye ligand derived by coupling of diazoniumsalt of sulfamethoxazole with 2-Ethyl-4-methyl phenol, have been synthesized and characterized by elemental analysis, conductometry, magnetic, IR, NMR, UV-Vis spectral studies and stepwise stability constants by PH metricmethod. Fromthe analytical data the stoichiometry of the complexes has been found to be 1:2 (metal: ligand). The low conductance values suggest that the complexes are non-electrolytes. The physic-chemical data indicates tetragonal geometry for all the complexes. Complexes have been screened for antimicrobial activity against B.megaterium, B. subtilis, E.coli, P.fluorescens,A.awamori andA.niger.