Hydrate compositions of hydroxyethylethylenediaminetriacetates of the rare-earth elements |
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Authors: | É. D. Filippova N. D. Mitrofanova L. I. Martynenko V. I. Spitsyn |
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Affiliation: | (1) ENSTA ParisTech, 32 Boulevard Victor, 75739 Paris Cedex 15, France;(2) CEMAGREF, Refrigeration Processing Research Unit, 92163 Antony, France; |
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Abstract: | 1. | Complexes of the REE, Y, and Sc with hydroxyethylethylenediaminetriacetic acid have been isolated in solid form. The hydrate compositions of the complexes have been determined. | 2. | The La and Pr complexes form hydrates of different compositions. The LnL hydrates form slightly nonisostructural groups in the series La-Lu. | 3. | According to thermographic analysis data, the hydrate water in the LnL·nH2O complexes of different hydrate compositions is not bonded with the same firmness. |
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