Chelate polymers. IV. siloxanes functionalized with chelating groups derived from hydroxy-ketones, their metal complexes and some polymers

New ligands were obtained by the reaction of 1,3‐bis(3‐aminopropyl)tetramethyldisiloxane, with acetylacetone, 2,4‐dihydroxybenzophenone and 2,4‐dihydroxyacetophenone. The structures were confirmed by electronic, IR and 1H NMR spectroscopy and elemental analysis. The change of the refractive index of the siloxanes by their chemical modification was also examined. These compounds were used for coordination of some divalent metals. The ligands and their metal complexes were both soluble in common solvents, such as CHCl3, dimethylformamide, dimethylsulfoxide, N‐methyl‐2‐pyrrolidone. Some of the bifunctional chelates were inserted into polymeric structures by polycondensation with the diacid chloride of bis(p‐carboxyphenyl)diphenylsilane. Copyright © 2005 John Wiley & Sons, Ltd. New types of ligand were obtained by reaction of 1,3‐bis(3‐aminopropyl)tetramethyldisiloxane (AP0) with acetylacetone, 2,4‐dihydroxybenzophenone and 2,4‐dihydroxyacetophenone. These compounds were complexed with divalent metals (copper, nickel, cobalt). Some of the bifunctional chelates were inserted in polymeric structures by polycondensation with bis(p‐carboxyphenyl)diphenylsilane as a diacid chloride.