Synthesis, characterization and antimicrobial activity of mixed ligand complexes of Mn(II), Co(II), Ni(II), Cu(II) and Fe(III) ions with N-(5-nitro-2-hydroxybenzylidene)-2-chlorobenzylamine and N-(5-nitro-2-hydroxybenzyl

Dipti Lakhe and Kiran V. Manga


Mixed schiff base ligand complexes of Mn(II), Co(II), Ni(II), Cu(II), and Fe(III) with N-(5-nitro-2- hydroxybenzylidene)-2-chlorobenzylamine and N-(5-nitro-2-hydroxybenzylidene)-4-aminobenzene-1-sulfonamide have been synthesized and characterized by elemental analyses, molar conductivity, thermal analysis, magnetic susceptibility, FT-IR, Electronic and ESR spectra. Analytical and spectroscopic data for all mononuclear metal complexes revealed 1:1:1(metal: ligand1: ligand2) formation ratio. Presence of two water molecule in the coordination site of complexes is confirmed from the thermal analysis. Octahedral geometry is suggested for all the complexes. Conductance measurement for all complexes in DMF solvent indicates their non-electrolytic nature. The antibacterial activity of the ligands and complexes indicate that the complexes show more potent activity than the free ligand.

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