REACTIVE POLYMERS .2. NOVEL POLYSTYRENE-ANCHORED COPPER(II), NICKEL(II), COBALT(II), IRON(III), ZINC(II), CADMIUM(II), ZIRCONIUM(IV), MOLYBDENUM(V), MOLYBDENUM(VI) AND URANIUM(VI) COMPLEXES OF THE CHELATING RESIN CONTAINING THE SCHIFF-BASE DERIVED FROM SALICYLALDEHYDE AND 1-AMINO-2-NAPHTHOL-4-SULFONIC ACID

Several new polystyrene-supported metal complexes have been synthesized by the reaction of a polymer-anchored ligand containing the Schiff base derived from salicylaldehyde and 1-amino-2-naphthol-4-sulphonic acid with a metal salt or metal complex. The metal-bound polymers have the general formula PS-LMX(n-m).qS (where PS-L= deprotonated polymer-anchored ligand, M = Cu(II), Ni(II), Co(II), Fe(III), Zn(II), Cd(II), Mo(V), Mo(VI), Zr(IV) and U(VI), n = valency of metal ion, m = basicity of polymer-anchored ligand and q = number of coordinated solvent molecule). The polymer-anchored ligand and its complexes have been characterized by elemental analysis, infrared, electronic and ESR spectra and magnetic susceptibility measurements. The chelating resin forms magnetically dilute complexes having a geometry comparable with those of nonpolymer-anchored complexes of the Schiff base. The Mo(V) complex shows a band at 950 cm(-1) due to the v(Mo=O). The Mo(VI) complex exhibits bands at 940 and 910 cm(-1) due to the v(sy)(O=Mo=O) and v(asy)(O=Mo=O), respectively, indicating the presence of a cis-MoO2 structure. The U(VI) complexes show a band at 905-910 cm(-1) due to the v(asy)(O=U=O) indicating the presence of a trans-UO2 structure. The infrared spectra of the complexes suggest the dibasic tridentate ONO donor behaviour of the polymer-anchored ligand. The complex PS-LCu DMF (DMF = dimethylformamide) exhibits the square planar geometry. The complexes PS-LNi.3DMF, PS-LCo.3DMF, PS-LFeC1.2DMF, PS-LMoOCI.DMF, PS-LMoO(2).DMF, PS-LUO(2).DMF and PS-LUO(2).DMSO have an octahedral structure, PS-LZn.DMF, PS-LZn.DMSO, PS-LCd.DMF and PS-LCd DMSO have a tetrahedral structure and PS-LZr(OH)(2) 2DMSO has a pentagonal bipyramidal structure. All complexes are magnetically dilute in nature.