Syntheses of polystyrene supported chelating resin containing the schiff base derived from 3-formylsalicylic acid and o-hydroxybenzylamine and its copper(II), nickel(ll), iron(III), zinc(II), cadmium(II), zirconium(IV), molybdenum(V and VI) and uranium(VI) complexes

Abstract

A series of new polystyrene-anchored coordination complexes has been synthesized by the reaction of metal complex/metal salt with the chelating resin containing the schiff base derived from <em>0- </em>hydroxybenzylamine and 3-formylsalicylic acid. The pofymer supported complexes have the formulae: PS-LCu.DMF, PS-LNi.3DMF, PS-LFeCI.2DMF, PS-LZn.DMF, PS-LCd.DMF, PS-LMoOCI.DMF, PS-LMoO₂. DMF, PS-LUO₂.DMF and PS-LZr(OH)₂2DMF (where PS-L= deprotonated polystyrene bound schiff base). The polymer supported complexes have been characterized by elemental analysis, infrared, electronic and EPR spectra and magnetic susceptibility measurements. The polymer-anchored copper(ll), nickel(II), iron(lII) and molybdenum(V) complexes are paramagnetic while the zinc(II), cadmium( Il), molybdenum(VI), uranium(VI) and zirconium(IV) complexes are diamagnetic. The magnetic and EPR data indicate the magnetically dilute nature of the complexes. The shifts of the v(C = N) (azomethine) and v(C - O) (phenolic) modes have been followed to find out the donor sites of the ligand. The polymer-anchored copper(ll) complex is square-planar, zinc(ll) and cadmium(Il) complexes are tetrahedral, nickel(II). iron(IIl). molybdenum(V) and (VII) and uranium(VI) complexes are octahedral and zirconium(IV) complex is pentagonal-bipyrarnidal. The structures of the complexes are comparable with the corresponding metal complexes of the non-anchored ligand.