Stabilité des carboxylates de terres, III. Maléates, méthylsuccinates et malates
- 1 January 1970
- journal article
- research article
- Published by Wiley in Helvetica Chimica Acta
- Vol. 53 (7) , 1876-1879
- https://doi.org/10.1002/hlca.19700530736
Abstract
The stability constants of maleates, methylsuccinates and malates of rare earths have been determined at 25.0 °C and at ionic strength 0,100 (NaClO4) by a potentiometric method. Each ligand forms 1 : 1 and 1 : 2 complexes in aqueous solution, the malates being the most stable. The first and the second dissociation constants of the ligand acids were also measured. The 1 : 2 maleates of La, Pr, Nd, Sm, and Eu have been isolated.Keywords
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