The stability consts. and thermodn. of formation of Th4+ and UO22+ malonate complexes were detd. by potentiometric and calorimetric titrns. in 1.00 M NaClO4 at 25°. All complexes formed were stabilized by a large entropy gain. Stability const. values agreed with an ionic bonding model in which the malonate behaved as a bidentate ligand forming only chelate complexes.
Thermodynamic Properties of Actinide Complexes. IV. Thorium(IV)- and Uranyl(VI) - Malonate Systems.
DI BERNARDO, PLINIO;
1977
Abstract
The stability consts. and thermodn. of formation of Th4+ and UO22+ malonate complexes were detd. by potentiometric and calorimetric titrns. in 1.00 M NaClO4 at 25°. All complexes formed were stabilized by a large entropy gain. Stability const. values agreed with an ionic bonding model in which the malonate behaved as a bidentate ligand forming only chelate complexes.
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