Modification of Methylaluminoxane-Activated ansa-Zirconocene Catalysts with Triisobutylaluminum—Transformations of Reactive Cations Studied by NMR Spectroscopy Full article
| Journal |
Chemistry - A European Journal
ISSN: 0947-6539 , E-ISSN: 1521-3765 |
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| Output data | Year: 2007, Volume: 13, Number: 18, Pages: 5294-5299 Pages count : 6 DOI: 10.1002/chem.200601801 | ||||
| Tags | Aluminum alkyls, Metallocenes, Methylaluminoxane, Polymerization, Structure-activity relationships | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union | 00-841 |
| 2 | BASELL GmbH |
Abstract:
When triisobutylaluminum (AliBu3) is added to solutions containing methylaluminoxane (MAO) and rac-[Me2Si(ind)2ZrCl2] (ind: indenyl) in C6D6, NMR spectra show that methyl-bridged mixed-alkylaluminum dimers Al(μ-Me)2Me4−xiBux predominate. These dimers react with MAO under partial transfer of isobutyl groups and induce a conversion of the initially prevailing cationic trimethylaluminum adduct rac-[Me2Si(ind)2Zr(μ-Me)2AlMe2+] to rac-[Me2Si(ind)2Zr(μ-Me)2AlMeiBu+] and rac-[Me2Si(ind)2Zr(μ-Me)2AliBu2+]. These species are unstable and release isobutene under formation of zirconocene hydrides.
Cite:
Babushkin D.E.
, Brintzinger H.H.
Modification of Methylaluminoxane-Activated ansa-Zirconocene Catalysts with Triisobutylaluminum—Transformations of Reactive Cations Studied by NMR Spectroscopy
Chemistry - A European Journal. 2007.
V.13. N18. P.5294-5299. DOI: 10.1002/chem.200601801
WOS
Scopus
РИНЦ
ANCAN
PMID
OpenAlex
Modification of Methylaluminoxane-Activated ansa-Zirconocene Catalysts with Triisobutylaluminum—Transformations of Reactive Cations Studied by NMR Spectroscopy
Chemistry - A European Journal. 2007.
V.13. N18. P.5294-5299. DOI: 10.1002/chem.200601801
WOS
Scopus
РИНЦ
ANCAN
PMID
OpenAlex
Files:
Full text from publisher
Dates:
| Submitted: | Dec 14, 2006 |
| Published online: | Mar 23, 2007 |
| Published print: | Jun 15, 2007 |
Identifiers:
| Web of science: | WOS:000247708300026 |
| Scopus: | 2-s2.0-34347257480 |
| Elibrary: | 13547139 |
| Chemical Abstracts: | 2007:717025 |
| Chemical Abstracts (print): | 147:301250 |
| PMID: | 17385201 |
| OpenAlex: | W2165145918 |