SYNTHESIS AND CHARACTERIZATION OF POLYSTYRENE-SUPPORTED CHELATING RESIN CONTAINING AN ON DONOR BIDENTATE SCHIFF-BASE AND ITS COPPER(II), NICKEL(II), COBALT(II), IRON(III), ZINC(II), MOLYBDENUM(VI) AND URANIUM(VI) COMPLEXES

A new bidentate ON donor Schiff base supported on a polystyrene matrix has been synthesized by the reaction of aminomethylated polystyrene a nd hydroxyacetone. The chelating resin reacts with metal salt/metal co mplex and forms metal-bound polymers. The formulae of the metal-bound polymers are: PS-LCu(CH3COO).S, PS-LNi (CH3COO).3S, PS-LCo(CH3COO).S, PS-LFeCl2.2S, PS-LZn (CH3COO).S, PS-LZnCl.S, PS-LMoO2(acac), and PS-LU O2(CH3COO).S (where PS-LH = polymer-anchored ligand; S = ethanol or me thanol and acac = deprotonated acetylacetone). The polymer-anchored co mplexes have been characterized by elemental analysis, IR and electron ic spectra and magnetic susceptibility measurements. The negative shif ts of the nu(C-O) (alcoholic) and nu(C=N) (azomethine) are indicative of the ON donor behaviour of the polymer-anchored ligand. The complexe s PS-LNi(CH3COO).3S, PS-LCo(CH3COO).S, PS-LFeCl2.2S, and PS-LCu(CH3COO )2.S are paramagnetic while PS-LZn(CH3COO).S, PS-LZnCl.S, PS-LMoO2(aca c), and PS-LUO2(CH3COO).S are diamagnetic. The force constant and U-O bond distance of the polymer-anchored uranium(VI) complexes are 7.03 m dyn/angstrom and 1.73 angstrom, respectively. The copper(II)- and coba lt(II)-bound polymers exhibit a square planar structure, nickel(II), i ron(III), molybdenum(VI) and uranium(VI) complexes are octahedral, and zinc(II) complexes are tetrahedral.