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Synthesis and molecular structures of zirconium and hafnium complexes bearing dimethylsilandiyl-bis-2,4,6-trimethylindenyl and dimethylsilandiyl-bis-2-methyl-4,6-diisopropylindenyl 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: Izmer V.V., Sorokin D.A., Kuz'mina L.G., Churakov A.V., Howard J.A.K, Voskoboynikov A.Z.
- Журнал: Journal of Organometallic Chemistry
- Том: 690
- Номер: 4
- Год издания: 2005
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 1067
- Последняя страница: 1079
- DOI: 10.1016/j.jorganchem.2004.10.052
- Аннотация: Zirconium and hafnium ansa-complexes containing 2,4,6-trialkyl-substituted indenyl fragments were synthesized and unambiguously characterized. Mixtures of rac- and meso-Me2Si(2-Me-4,6-R2C9H3-eta(5))(2)MCl2, where R = Me, i-Pr and M = Zr, Hf, were obtained by a treatment of MCl4 by dilithium salts of the respective bis(2,4,6-trialkylindenyl)dimethylsilanes in toluene. Alternatively, better yields of the same complexes can be obtained by the reaction between metal tetrachlorides and indenyl-tin derivatives gave the desired ansa-metallocenes. All rac- and meso-complexes of Zr and Hf were isolated in an analytically pure form, and six of these ansa-metallocenes were characterized by X-ray crystal structure analysis. (C) 2004 Elsevier B.V. All rights reserved.
- Добавил в систему: Измер Вячеслав Валерьевич