rac-Me2Si(2-Me-4-t-Bu-C5H2)2ZrMe+: An Alkyl Zirconocenium Cation Stabilized by Steric Shielding against Interaction with Ancillary Ligands Научная публикация
Журнал |
Organometallics
ISSN: 0276-7333 , E-ISSN: 1520-6041 |
||||||||
---|---|---|---|---|---|---|---|---|---|
Вых. Данные | Год: 2005, Том: 24, Номер: 5, Страницы: 867-871 Страниц : 5 DOI: 10.1021/om049139z | ||||||||
Ключевые слова | OLEFIN POLYMERIZATION CATALYSTS; METALLOCENE; METHYLALUMINOXANE; ACTIVATION | ||||||||
Авторы |
|
||||||||
Организации |
|
Информация о финансировании (1)
1 | International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union | 00-841 |
Реферат:
The sterically shielded cation rac-Me2Si(2-Me-4-t-Bu-C5H2)2ZrMe+, generated by reaction of rac-Me2Si(2-Me-4-t-Bu-C5H2)2ZrMe2 with methylalumoxane (MAO) or with dimethylanilinium or trityl perfluorotetraphenylborate, differs from other, more open zirconocene methyl cations in that it does not form the symmetric AlMe3 adduct rac-Me2Si(2-Me-4-t-Bu-C5H2)2Zr(μ-Me)2AlMe2+. Instead, the unsymmetric ternary adduct rac-Me2Si(2-Me-4-t-Bu-C5H2)2ZrMe(μ-Me)AlMe3−NMe2Ph+ is formed in the presence of dimethylaniline and trimethylaluminum. UV/vis and 1H NMR characteristics of hydrocarbon solutions containing rac-Me2Si(2-Me-4-t-Bu-C5H2)2ZrMe+···B(C6F5)4- or rac-Me2Si(2-Me-4-t-Bu-C5H2)2ZrMe+···MAOMe- indicate that cation−anion association in these ion pairs is unusually weak.
Библиографическая ссылка:
Schröder L.
, Brintzinger H-H.
, Babushkin D.E.
, Fischer D.
, Mülhaupt R.
rac-Me2Si(2-Me-4-t-Bu-C5H2)2ZrMe+: An Alkyl Zirconocenium Cation Stabilized by Steric Shielding against Interaction with Ancillary Ligands
Organometallics. 2005. V.24. N5. P.867-871. DOI: 10.1021/om049139z WOS Scopus РИНЦ
rac-Me2Si(2-Me-4-t-Bu-C5H2)2ZrMe+: An Alkyl Zirconocenium Cation Stabilized by Steric Shielding against Interaction with Ancillary Ligands
Organometallics. 2005. V.24. N5. P.867-871. DOI: 10.1021/om049139z WOS Scopus РИНЦ
Даты:
Поступила в редакцию: | 9 нояб. 2004 г. |
Опубликована online: | 26 янв. 2005 г. |
Опубликована в печати: | 28 февр. 2005 г. |
Идентификаторы БД:
Web of science | WOS:000227098200019 |
Scopus | 2-s2.0-14844293865 |
РИНЦ | 13500139 |
Chemical Abstracts | 2005:67002 |
Chemical Abstracts (print) | 142:316911 |
OpenAlex | W2008446721 |