Kinetic studies of ligand substitution reactions of aluminum, gallium and indium

Abstract

The mechanism of ligand substitution reactions of tervalent ion complexes of these main group elements has been mostly discussed on the basis of activation parameters, including volume of activation, but the experimental work has been almost limited to the reactions of unidentate ligands. We have undertaken kinetic studies of the ligand isotopic exchange of tris(β-diketonato) complexes by the isotope labelling method and compared the mechanism and rate of substitution with those in the literature. Mutual relationships among the activation parameters are also discussed.