论文信息 - The nature of U(VI) complexation by halates and chloroacetates

The nature of U(VI) complexation by halates and chloroacetates

Abstract The 1:1 complexation of uranyl cation with halates and haloacetates was studied in 0.10 M (NaClO 4 ) solution. The stability constants were obtained by a solvent extraction technique using 233 UO 2 2+ and the enthalpy data by calorimetric titration. The halate data were interpreted to reflect an outer-sphere nature for UO 2 ClO 3 + , an inner-sphere nature for UO 2 IO 3 + and a mixed nature for UO 2 BrO 3 + . Uranyl monoacetate was assigned an innersphere character, UO 2 ClAc + and UO 2 Cl 2 Ac + a mixed character, and UO 2 Cl 3 Ac + an outer-sphere nature.

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