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In situ IR and NMR study of the interactions between proton donors and the Re(I) hydride complex [{MeC(CH2PPh2)3}Re(CO)(2)H]. ReH center dot center dot center dot H bonding and proton-transfer pathwaysстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 24 марта 2017 г.
- Авторы: Shubina E.S., Belkova N.V., Bakhmutova E.V., Vorontsov E.V., Bakhmutov V.I., Ionidis A.V., Bianchini C., Marvelli L., Peruzzini M., Epstein L.M.
- Журнал: Inorganica Chimica Acta
- Том: 280
- Номер: 1-2
- Год издания: 1998
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 302
- Последняя страница: 307
- DOI: 10.1016/S0020-1693(98)00063-2
- Аннотация: The reactions of various proton donors (phenol, hexafluoro-2-propanol, perfluoro-2-methyl-2-propanol, monochloroacetic acid, and telrafluoroboric acid) with the rhenium(I) hydride complex [(triphos)Re(CO)(2)H] (1) have been studied in dichloromethane solution by in situ IR and NMR spectroscopy. The proton donors form [ (triphos)Re( CO)(2)H ... HOR] adducts exhibiting rather strong H ... H interactions. The enthalpy variations associated with the formation of the II-bonds ( -Delta H= 4.4-6.0 kcal mol(-1)) have been determined by IR spectroscopy, while the H ... H distance in the adduct [(triphos)Re(CO)(2)H ... HOC(CF3)(3)] (1.83 Angstrom) has been calculated by NMR spectroscopy through the determination of the T-1min relaxation time of the Re-H proton. It has been shown that the [ (triphos)Re( CO)(2)H ... HOR] adducts are in equilibrium with the dihydrogen complex [(triphos)Re(CO)(2)( eta(2)-H-2)](+), which is thermodynamically more stable than any I-I-bond adduct. (C) 1998 Elsevier Science S.A. Ail rights reserved.
- Добавил в систему: Шубина Елена Соломоновна