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-mercap toquinoline or its derivatives (5-Cl-, 5-Br-, 5-Me-, 5-Ph- and 5-SMe- 8-mer captoquinoline), with a cobalt(III)hexacyanoferrate(II) gelatin-immobilized matrix in contact with an aqueous solution of the corresponding ligand, ha ve been observed. Under the specific conditions described, three water-inso luble coordination compounds are formed in each of the systems indicated, w hereas upon complexing in solution or the solid phase the formation of only one complex is observed.