Key intermediates in metallocene-and post-metallocene-catalyzed polymerization

E. P. Talsi; K. P. Bryliakov; N. V. Semikolenova; V. A. Zakharov; M. Bochmann

doi:10.1134/s0023158407040052

Key intermediates in metallocene-and post-metallocene-catalyzed polymerization

E. P. Talsi, K. P. Bryliakov, N. V. Semikolenova, V. A. Zakharov, M. Bochmann

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

The structures of intermediates formed upon the activation by methylaluminoxane (MAO) of a wide range of metallocene and post-metallocene catalysts of olefin polymerization were studied by C-13, H-1, and F-19 NMR. For all metallocenes considered (L2ZrCl2 and L2TiCl2), under conditions similar to real polymerization conditions (Al/Zr > 200), two types of intermediates were identified in the reaction solution, namely, heterodinuclear ion pairs [L-2 M(mu-Me)(2)AlMe2](+)[Me-MAO](-) (III) and zwitterionic intermediates L-2 MMe+

Original language	English
Pages (from-to)	490-504
Number of pages	15
Journal	Kinetics and Catalysis
Volume	48
Issue number	4
DOIs	https://doi.org/10.1134/s0023158407040052
Publication status	Published - Jul 2007

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10.1134/s0023158407040052

Cite this

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title = "Key intermediates in metallocene-and post-metallocene-catalyzed polymerization",

abstract = "The structures of intermediates formed upon the activation by methylaluminoxane (MAO) of a wide range of metallocene and post-metallocene catalysts of olefin polymerization were studied by C-13, H-1, and F-19 NMR. For all metallocenes considered (L2ZrCl2 and L2TiCl2), under conditions similar to real polymerization conditions (Al/Zr > 200), two types of intermediates were identified in the reaction solution, namely, heterodinuclear ion pairs [L-2 M(mu-Me)(2)AlMe2](+)[Me-MAO](-) (III) and zwitterionic intermediates L-2 MMe+ ",

author = "Talsi, {E. P.} and Bryliakov, {K. P.} and Semikolenova, {N. V.} and Zakharov, {V. A.} and M. Bochmann",

note = "7th Russian Conference on Mechanisms of Catalytic Reactions JUL 02-08, 2006 St Petersburg, RUSSIA",

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T1 - Key intermediates in metallocene-and post-metallocene-catalyzed polymerization

AU - Talsi, E. P.

AU - Bryliakov, K. P.

AU - Semikolenova, N. V.

AU - Zakharov, V. A.

AU - Bochmann, M.

N1 - 7th Russian Conference on Mechanisms of Catalytic Reactions JUL 02-08, 2006 St Petersburg, RUSSIA

PY - 2007/7

Y1 - 2007/7

N2 - The structures of intermediates formed upon the activation by methylaluminoxane (MAO) of a wide range of metallocene and post-metallocene catalysts of olefin polymerization were studied by C-13, H-1, and F-19 NMR. For all metallocenes considered (L2ZrCl2 and L2TiCl2), under conditions similar to real polymerization conditions (Al/Zr > 200), two types of intermediates were identified in the reaction solution, namely, heterodinuclear ion pairs [L-2 M(mu-Me)(2)AlMe2](+)[Me-MAO](-) (III) and zwitterionic intermediates L-2 MMe+

AB - The structures of intermediates formed upon the activation by methylaluminoxane (MAO) of a wide range of metallocene and post-metallocene catalysts of olefin polymerization were studied by C-13, H-1, and F-19 NMR. For all metallocenes considered (L2ZrCl2 and L2TiCl2), under conditions similar to real polymerization conditions (Al/Zr > 200), two types of intermediates were identified in the reaction solution, namely, heterodinuclear ion pairs [L-2 M(mu-Me)(2)AlMe2](+)[Me-MAO](-) (III) and zwitterionic intermediates L-2 MMe+

U2 - 10.1134/s0023158407040052

DO - 10.1134/s0023158407040052

M3 - Article

SN - 0023-1584

VL - 48

SP - 490

EP - 504

JO - Kinetics and Catalysis

JF - Kinetics and Catalysis

IS - 4

ER -