Synthesis and Characterization Some Complexes of Mixed Ligand and Study Its Effects as Antioxidant and Anticancer

Abstract

A series of mixed ligand complexes of Co(II), Ni(II), Cu(II), Zn (II),Cd(II), Fe (III ) and
Au(III) were prepared and characterized. A new azo ligand derived from 4-methylimidazole with sulfadiazine and Schiff base derived from 4-(dimethylamino)-2-hydroxobenzaldehyde and 4-amino-3-hydroxy benzene sulfonamide. Ligands structures and their transitional metal mix-ligand complexes were characterized using various analytical techniques, including molar conductance, elemental analysis (C.H.N), electronic spectral, magnetic measurements, 1HNMR, IR spectral studies and mass spectra. The data shows that these complexes have composition of [ML1L2H2O] where M = Co(II), Ni(II), Cu(II), Zn(II) ,Cd(II) and Hg(II). [ML1L2Cl] where M=Fe(III). [ML1L2]Cl2 where M=Au(III). The magnetic susceptibility and electronic spectral data of the complexes indicate that the octahedral geometry of all complexes, except the complex of Au(III) indicates a square plane geometry. The IR results demonstrate that the co-ordination sites are imidazole nitrogen atom and the farthest azo nitrogen atom of L1 as natural bidentate with nitrogen the azomethine and oxygen atoms of Schiff base L4. Azo ligand and Schiff base behave as tridentate manner. All the compounds showed DPPH radical scavenging activity. In general, the results indicated that the complexes have potential and promising anti-oxidant activities.