|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
Homo- and hetero-metallic rhenium oxomethoxide complexes with a M-4(mu-O)(2)(mu-OMe)(4) planar core - a new family of metal alkoxides displaying a peculiar structural disorder. Preparation and X-ray single crystal studyстатья
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 29 мая 2015 г.
- Авторы: Seisenbaeva G.A., Shevelkov A.V., Tegenfeldt J., Kloo L., Drobot D.V., Kessler V.G.
- Журнал: Dalton Transactions
- Номер: 19
- Год издания: 2001
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 2762
- Последняя страница: 2768
- DOI: 10.1039/b103287a
- Аннотация: The reaction of Re2O7 with MeOH at room temperature leads to a fine black powder. A product with the same crystal structure, according to X-ray powder data, was obtained in the form of single crystals on storage of solutions of Re2O3(OMe)(6), obtained by anodic oxidation of Re metal. It was identified as Re4O6(OMe)(12) (1) by an X-ray single crystal study. A mixed-valence complex of analogous composition and structure, Re4O6-y (OMe)(12+y) (2), earlier erroneously described as Re4O2(OMe)(16), can be obtained via anodic dissolution of Re in MeOH using high current densities. The heterometallic members of this family, Re4-xMxO6-y(OMe)(12+y) [M = Mo (3), W (4); x less than or equal to 0.55, y < 1.0], were obtained by interaction of Re2O7 with MO(OMe)(4) or M(OMe)(6) in toluene at reflux. Mo-poor samples of 3 (x <less than or equal to> 0.25) could also be obtained on storage of solutions prepared by anodic oxidation of Re, in the presence of MoO(OMe)(4). The reaction of Re2O7 with Nb(OMe)(5) or Ta(OMe)(5) in refluxing toluene gave M-4(mu -O)(2)(mu -OMe)(4)(OMe)(14)(ReO4)(2) [M = Nb (5), Ta (6)] as the only crystalline products. The compounds 1-6 are insoluble in organic solvents and display a remarkable resistance to ambient atmosphere, making them attractive precursors for soft chemical preparation of rhenium metal and alloy powders.
- Добавил в систему: Шевельков Андрей Владимирович