| Autor: |
Turova, N. YA., Turevskaya, E. P., Kessler, V. G., Yanovskaya, M. I. |
| Zdroj: |
Journal of Sol-Gel Science and Technology; January 1994, Vol. 2 Issue: 1-3 p17-23, 7p |
| Abstrakt: |
X-ray structural analysis of “crystalline alkoxides” in many cases reveals that along with OR-groups their molecules also contain oxo-ligands. The following possible reactions leading to formation of oxoalkoxides have been discussed: hydrolysis, pyrolysis (frequently uncontrollable), ether elimination, oxidation of OR-groups (which exist in solutions of alkali, alkaline-earth and rare earth elements), or alkoxides of the lower oxidation states (which are formed by reduction of M(OR)n on cathode during electrolysis or by hydrogen in statu nascendi). Oligomeric oxoalkoxides differ from the polymeric alkoxides M(OR)n in considerably higher solubility and reactivity. The most important role of oxoalkoxides in the processes of formation of oxides has been demonstrated using as an example preparation of BaTiO3 from alkoxides. |
| Databáze: |
Supplemental Index |
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