Transition Metal Complexes of 4-aminobenzenesulfonamide 1,3-benzodioxole-5-carbaldehyde: Synthesis, Characterization and Biological Activities

Cu(II), Zn(II), Ni(II) and Cd(II) complexes with Schiff base ligand derived from piperonal and sulfanilamide have been synthesized and characterized by elemental (C, H and N) analysis, UV-Vis, IR, 1H and 13C NMR, mass spectra, thermal analysis (TG/DTA) and molar conductance measurements. The spectral data suggest that the coordination of metal ion with ligand is only through imine nitrogen (–CH=N–) as monodentate manner. Thermal analysis indicates the presence of lattice and coordinated water molecules in the complexes. Mass spectral data further support the formula mass and structure of the compounds. Biological activities of all the compounds were evaluated.