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  Phosphino-Substituted Cyclopentadienyl Chromium Catalysts for the Oligomerization of Ethylene

Döhring, A., Jensen, V. R., Jolly, P. W., Thiel, W., & Weber, J. C. (2001). Phosphino-Substituted Cyclopentadienyl Chromium Catalysts for the Oligomerization of Ethylene. In R. Blom, A. Follestad, & E. Rytter (Eds.), Organometallic Catalysts and Olefin Polymerization: Catalysts for a New Millennium (pp. 127-136). Berlin: Springer.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0024-2785-5 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0024-2786-3
Genre: Book Chapter

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 Creators:
Döhring, Arno1, Author           
Jensen, Vidar R.2, Author           
Jolly, Peter W.1, Author           
Thiel, Walter2, Author           
Weber, Jan C.3, Author
Affiliations:
1Research Department Jolly, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_persistent22              
2Research Department Thiel, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445590              
3Max-Planck-Institut für Kohlenforschung, Max Planck Society, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, DE, ou_1445580              

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 Abstract: Heterogeneous chromium catalysts are used to prep. much of the polyethylene manufd. industrially. Related homogeneous catalysts have received less attention and have never found com. use. A new family of phosphinoalkyl-​substituted cyclopentadienyl chromium compds. which, after activation with methylaluminoxane, give highly active homogeneous catalysts for the oligomerization and polymn. of ethylene are prepd.; the degree of oligomerization is controlled by the size of the substituents on the P-​atom. By varying the substituent the catalysis can be directed to give mainly dimers and trimers, oligomers or polymer. D. functional calcns. indicate that this effect is the consequence of an unusually selective steric destabilization of the transition state for termination which proceeds by β-​hydrogen transfer to the incoming ethylene in a reaction involving spin inversion.

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Language(s): eng - English
 Dates: 2001
 Publication Status: Issued
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1007/978-3-642-59465-6_11
 Degree: -

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Title: Organometallic Catalysts and Olefin Polymerization: Catalysts for a New Millennium
Source Genre: Book
 Creator(s):
Blom, R., Editor
Follestad, A., Editor
Rytter, E., Editor
Tilset, M., Author
Ystenes, M., Author
Affiliations:
-
Publ. Info: Berlin : Springer
Pages: 10 Volume / Issue: - Sequence Number: - Start / End Page: 127 - 136 Identifier: ISBN: 978-3-642-63987-6