Studies on poly(8-acryloyloxy-quinoline) and its metal complexing ability in aqueous medium

8-Acryloyloxyquinoline(8-AOQ), prepared from acryloyl chloride and 8-hydrox yquinoline, was polymerized in methyl ethyl ketone at 70 degrees C using be nzoyl peroxide as a free radical initiator. Polychelates were obtained when aqueous solution of Th(II)/Cd(II)/Zn(II)/Ni(II) and Mg(II) ions were added to the polymer dissolved in sodium hydroxide solution. The IR spectra of t hese polychelates suggest that metals are coordinated through oxygen of the esteric carbonyl with nitrogen atom. Elemental analysis of polychelates su ggests that the metal-ligand ratio is about 1:2. The electronic spectra, EP R, and magnetic moments of polychelates showed an octachedral and square pl anar structure for poly(8-AOQ)- Ni(II)/Th(II) and poly(8-AOQ)-Zn(II)/Cd(II) /Mg(II) complexes respectively. X-ray diffraction studies reveal that the p olychelates are highly crystalline. The thermal properties of polymer metal complexes are discussed.