Synthesis, characterization and reactivity of volatile yttrium-sodium fluoroisopropoxide derivatives. Retention of sodium as a general feature
| Autor: | Florence Labrize, Liliane G. Hubert-Pfalzgraf |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Thermogravimetric analysis
Sodium chemistry.chemical_element Alcohol Metathesis Medicinal chemistry Inorganic Chemistry Solvent chemistry.chemical_compound chemistry Materials Chemistry Organic chemistry Sublimation (phase transition) Lewis acids and bases Physical and Theoretical Chemistry Stoichiometry |
| Zdroj: | Polyhedron. 14:881-888 |
| ISSN: | 0277-5387 |
| DOI: | 10.1016/0277-5387(94)00323-7 |
| Popis: | Metathesis involving YCl3 and sodium 1,1,1,3,3,3-hexafluoro-2-propoxide offered a mixed-metal species, YNa3[OCH(CF3)2]6(THF)3 (1). The reaction between 1 and yttrium and copper derivatives, β-diketonates and halides, gave access to YNa2 [OCH(CF3)2]4(thd)(THF)4 (2) and the NaCu species, Na2Cu[OCH(CF3)2]4(THF)4 and [NaCu[OCH(CF3)2]2(thd)]m (5), respectively (thdH = 2,2,6,6-tetramethylheptane-3,5-dione). Alcohol interchange reactions between Y5O(OPri)13 and fluoroisopropanol led to the isolation of Y[OCH(CF3)2]3L3 [L = THF (3a) or PriOH (3b)] depending on the solvent, THF or hexane. The various compounds have been characterized by FT-IR, NMR (1H, 13C, 19F) and mass spectrometry and thermogravimetric analysis. All compounds are volatile; sublimation of the YNa or NaCu species occurs with retention of the stoichiometry between the metals. The Lewis bases are readily lost during sublimation of compounds 1, 2 and 3a or 3b. |
| Databáze: | OpenAIRE |
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