Synthesis and characterization of dioxouranium(VI), oxovanadium(lV), thorium(lV), zinc(II), cadmium(II), mercury(II) and lead(II) complexes with propylenediamine-bis(isatin) schiff base

Abstract

Some metal complexes of propylenediamine-bis(isatin) schiff base ligand with dioxouranium(VI), oxovanadium(lV), Th(lV), Zn(II), Cd(II), Hg(lI) and Pb(lI) have been prepared and characterized by elemental analysis. IR, UV-visible, NMR spectra as well as molar conductivity and magnetic measurements. The data suggest a 1:1 (metal: ligand) stoichiometry for all the isolated complexes. The ligand behaves as neutral ONNO quadridentate for all chelates except for those prepared from the direct reaction of the free ligand with dioxouranium(VI), Zn(II) and Pb(Il) where the ligand acts as.dibasic quadridentate.