Cobalt(III)-8-mercaptoquinoline complexing in cobalt(III)hexacyanoferrate(II) gelatin-immobilized matrix systems

Novel complexing processes in binary systems containing Co^III and 8-mercaptoquinoline or its derivatives (5-Cl-, 5-Br-, 5-Me-, 5-Ph- and 5-SMe- 8-mercaptoquinoline), with a cobalt(III)hexacyanoferrate(II) gelatin-immobilized matrix in contact with an aqueous solution of the corresponding ligand, have been observed. Under the specific conditions described, three water-insoluble coordination compounds are formed in each of the systems indicated, whereas upon complexing in solution or the solid phase the formation of only one complex is observed.