Investigation on the Complex Formation of Some Lanthanoids(III) and Actinoids(III) with Chloride and Bromide

Abstract

Listen

Translate article

Abstract Stability constants (β1 and β2) of the chloro and bromo complexes of tervalent Sm, Eu, Gd, Tb, Ac, Am, Cm, Bk, and Cf were determined by a solvent extraction method under the conditions of ionic strength and acidity to be 3.0 and 0.15 M (1 M=1 mol/dm3), respectively. Stability constants obtained were discussed with respect to the formation mechanism. A much larger contribution from the inner sphere complex formation was observed in chloro complexes than bromo complexes on tripositive actinoids.