Synthesis and spectral studies of 2,6-diformyl-4- methylphenolsemicarbazone ligand and their binuclear metal complexes


A new binuclear complexes of Ni+2, Pd+2, Zn+2, Cd+2 and Hg+2 ions with [H3L] {where H3L= 4-Methyl-2,6-bis(formyl semicarbazone) phenol} type (N2O3). The ligand was prepared from reaction two equivalent of semicarbazide hydrochloride with 2,6-diformyl-p-cresol and then reacted with metal ions to form the title complexes. The precursor, ligand and complexes were characterized by {IR, UV-Vis, 1H, 13C, 1H-13C NMR and mass spectroscopy}, molar conductivity, atomic absorption, the microanalysis of elements (C.H.N) and chlore contain. The spectral studies showed the geometry around the Ni+2 and Pd+2 ions are square planar and the Zn+2, Cd+2 and Hg+2 ions are distorted tetrahedral