Formation, Solution Structure and Reactivity of Alkylperoxo Complexes of Titanium Научная публикация
| Журнал |
Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169 |
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| Вых. Данные | Год: 2003, Том: 200, Номер: 1-2, Страницы: 165-175 Страниц : 11 DOI: 10.1016/S1381-1169(03)00039-6 | ||
| Ключевые слова | 1H and 13C NMR spectroscopy, Alkylperoxo complexes of titanium(IV), Intermediates of selective epoxidation | ||
| Авторы |
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| Организации |
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Информация о финансировании (1)
| 1 | Российский фонд фундаментальных исследований | 01-03-32387 |
Реферат:
A detailed in situ Full-size image (<1 K) and Full-size image (<1 K) NMR spectroscopic characterization of the following families of alkylperoxo complexes of titanium is presented: Ti(η2-OOtBu)n(OiPr)4−n, where n = 1–4; binuclear complexes [(iPrO)3Ti(μ-OiPr)2Ti(OiPr)2(η2-OOtBu)] and [(η2-OOtBu)(iPrO)2Ti(μ-OiPr)2Ti(OiPr)2(η2-OOtBu)]; complexes with β-diketonato ligands: Ti(LL)2(OEt)(η2-OOtBu), Ti(LL)2(OiPr)(η2-OOtBu), Ti(LL)2(η2-OOtBu)2, Ti(LL)2(OtBu)(η1-OOtBu), where HLL = acetylacetone, dipivaloylmethane. These alkylperoxo complexes could not be isolated due to their instability and were studied in situ at low temperatures. Whereas the side-on (η2) coordination mode of tert-butylperoxo ligand is generally preferable, the end-on (η1) coordination caused by spatial hindrance from surrounding bulky ligands is found in two cases. The quantitative data on the reactivity of alkylperoxo complexes found towards sulfides and alkenes were obtained. The system TiO(acac)2/tBuOOH in C6H6 was reinvestigated using Full-size image (<1 K) and Full-size image (<1 K) NMR spectroscopy. The structure of the complex Ti(acac)2{CH3C(O)(OOtBu)COO} actually formed in this system was elucidated. Four types of titanium(IV) alkylperoxo complexes were detected in the Sharpless–Katsuki catalytic system using Full-size image (<1 K) NMR spectroscopy.
Библиографическая ссылка:
Babushkin D.E.
, Talsi E.P.
Formation, Solution Structure and Reactivity of Alkylperoxo Complexes of Titanium
Journal of Molecular Catalysis A: Chemical. 2003. V.200. N1-2. P.165-175. DOI: 10.1016/S1381-1169(03)00039-6 WOS Scopus РИНЦ CAPlusCA OpenAlex
Formation, Solution Structure and Reactivity of Alkylperoxo Complexes of Titanium
Journal of Molecular Catalysis A: Chemical. 2003. V.200. N1-2. P.165-175. DOI: 10.1016/S1381-1169(03)00039-6 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
| Поступила в редакцию: | 28 нояб. 2002 г. |
| Принята к публикации: | 13 янв. 2003 г. |
| Опубликована online: | 22 февр. 2003 г. |
| Опубликована в печати: | 2 июн. 2003 г. |
Идентификаторы БД:
| Web of science: | WOS:000183168200017 |
| Scopus: | 2-s2.0-0038179599 |
| РИНЦ: | 13428692 |
| Chemical Abstracts: | 2003:364268 |
| Chemical Abstracts (print): | 139:373565 |
| OpenAlex: | W2094290433 |