Study of the mechanisms for planar chromatographic separations of cobalt(Ⅲ) complexes containing chelate rings of different size

摘要

The chromatographic separation mechanisms of cobalt(Ⅲ) complexes containing different size aminocarboxylato or diamine chelate rings on cellulose, silica gel, aluminium oxide and polyacrylonitrile were studied. Depending on the nature of the complexes and its chelate rings, as well as on the composition of the sorbent and the solvent used, the folllowing mechanisms were assumed: hydrogen bonding, positive or negative solvation and normal-phase partition.