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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 Schröder Lars 1 , Brintzinger Hans-Herbert 1 , Babushkin Dmitrii E. 2,3 , Fischer David 4 , Mülhaupt Rolf 4
Организации
1 Fachbereich Chemie, Universität Konstanz, D-78457 Konstanz, Germany
2 Boreskov Institute of Catalysis, Russian Academy of Sciences, 630090 Novosibirsk, Russian Federation
3 Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russian Federation
4 Freiburger Materialforschungszentrum, Universität Freiburg, D-79104 Freiburg, Germany

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 CAPlusCA OpenAlex
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
Цитирование в БД:
БД Цитирований
Web of science 29
Scopus 30
РИНЦ 28
OpenAlex 32
Альметрики: