Stability Constants of Some Uranyl Complexes. II

Abstract

Stability constants of complexes of uranyl ion with various carboxylic acids were determined by the pH titration method at 31°C and μ=0.1 (NaClO4) in the pH range 2.5–3.5. The 1 : 1 and 1 : 2 complexes were formed with crotonic, pyruvic, malonic, and diglycolic acids and only the 1 : 1 complex with formic, propionic, succinic, adipic, maleic, fumaric acids. The effect of ring size and presence of oxygen atom as keto or ether oxygen or that of double bonds in the ligand acids on the stabilities of the corresponding complexes are discussed.