Distinct Methylalumoxane(MAO)-Derived Me-MAO- Anions in Contact with a Zirconocenium Cation - A 13C-NMR Study Full article
| Journal |
Dalton Transactions
ISSN: 1477-9226 , E-ISSN: 1477-9234 |
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| Output data | Year: 2006, Number: 38, Pages: 4539-4544 Pages count : 6 DOI: 10.1039/b611028m | ||||
| Tags | METALLOCENIUM ION-PAIRS; FIELD-GRADIENT NMR; OLEFIN POLYMERIZATION; PROPENE POLYMERIZATION; COMPLEXES; METHYLALUMINOXANE; PROPAGATION; ACTIVATION; CATALYST; EQUILIBRIA | ||||
| 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 | Verband der Chemischen Industrie |
Abstract:
Zirconocenium cations of the type [(MeC5H4)2ZrMe]+, formed by excess methylalumoxane (MAO) from (MeC5H4)2ZrCl2 or (MeC5H4)2ZrMe2 with 13C-labelled ring ligands, are found to form ion pairs with two types of anions, Me–MAOA− and Me–MAOB−, which differ in their coordinative strengths: More strongly coherent ion pairs [(MeC5H4)2ZrMe+⋯Me–MAOB−] are converted to more easily separable ion pairs [(MeC5H4)2ZrMe+⋯Me–MAOA−] by a sufficient excess of MAO. These react with Al2Me6 to form outer-sphere ion pairs containing the cationic AlMe3 adduct [(MeC5H4)2Zr(µ-Me)2AlMe2]+; formation of the more easily separable ion pairs might be required also for polymerisation catalysis.
Cite:
Babushkin D.E.
, Naundorf C.
, Brintzinger H.H.
Distinct Methylalumoxane(MAO)-Derived Me-MAO- Anions in Contact with a Zirconocenium Cation - A 13C-NMR Study
Dalton Transactions. 2006.
N38. P.4539-4544. DOI: 10.1039/b611028m
WOS
Scopus
Scopus
РИНЦ
ANCAN
PMID
OpenAlex
Distinct Methylalumoxane(MAO)-Derived Me-MAO- Anions in Contact with a Zirconocenium Cation - A 13C-NMR Study
Dalton Transactions. 2006.
N38. P.4539-4544. DOI: 10.1039/b611028m
WOS
Scopus
Scopus
РИНЦ
ANCAN
PMID
OpenAlex
Files:
Full text from publisher
Dates:
| Submitted: | Jul 31, 2006 |
| Accepted: | Aug 18, 2006 |
| Published online: | Sep 5, 2006 |
Identifiers:
| Web of science: | WOS:000240935300002 |
| Scopus: | 2-s2.0-33749344483 | 2-s2.0-85034385915 |
| Elibrary: | 45569878 |
| Chemical Abstracts: | 2006:1020371 |
| Chemical Abstracts (print): | 146:8055 |
| PMID: | 17016564 |
| OpenAlex: | W2163584437 |