Abstract
The chromatographic behavior of tris(2-methyl-8-quinolinolato)gallium and other tris(methyl-substituted 8-quinolinolato)galliums was studied with a methanol-water mixture (80:20 v/v) containing 5×10-4mol dm-3 of the corresponding methyl-substituted 8-quinolinol and 2×10-3mol dm-3 of a hexamethylenetetramine buffer (pH 6.0). The chromatographic behavior of tris(2-methyl-8-quinolinolato)gallium and tris(2, 5-dimethyl-8-quinolinolato)gallium changed when the column was varied. The other tris(methyl-substituted 8-quinolinolato)galliums did not change. Tris(2-methyl-8-quinolinolato)gallium and tris(2, 5-dimethyl-8-quinolinolato)gallium were dissociated by EDTA among all of the tris(methyl-substituted 8-quinolinolato)galliums studied. It was suggested that the chromatographic behavior of tris(2-methyl-8-quinolinolato)gallium was influenced by the chelate forming the interaction of the silanol group on the stationary phase.
