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Stereochemical effects on the catalytic properties of tricyclic Cu(II) complexes with bis(oxa, aza) chelate ligandsстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Zakharov A.N., Zefirov N.S.
- Журнал: Kinetics and Catalysis
- Том: 39
- Номер: 1
- Год издания: 1998
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 29
- Последняя страница: 37
- Аннотация: Catalytic properties of Cu(II) tricyclic chelates of tetradentate Schiff bases from salicylaldehyde or enaminoketones from benzoylacetone and 1,2-ethylenediamine or 1,4-tetramethylenediamine were studied in cyclohexene liquid-phase oxidation by molecular oxygen. The initial catalytic activity of Cu(II) chelates of pseudotetrahedral structure based on 1,4-tetramethylenediamine is higher than the catalytic activity of square-planar Cu(II) complexes that are 1,2-ethylenediamine derivatives. The rate of the catalytic oxidation of cyclohexene in the presence of square-planar Cu(II) chelates is constant, whereas the catalytic activity of the pseudotetrahedral chelate, a derivative of salicylaldehyde, monotonically decreases and attains the steady-state value, which is different from that for the 1,2-ethylenediamine-based Cu(II) complex. The non-steady-state behavior of the pseudotetrahedral Cu(II) chelates is stipulated by rotational isomerization that yields a stable flattened isomer of lower catalytic activity.
- Добавил в систему: Зефиров Николай Серафимович