Formation of zirconocene fluoro complexes:: No deactivation in the polymerization of olefins by the contact-ion-pair catalysts [CP′2ZrR]+[RB(C6F5)3]-

被引：36
作者：
Arndt, Perdita
Jaeger-Fiedler, Ulrike
Klahn, Marcus
Baumann, Wolfgang
Spannenberg, Anke
Burlakov, Vladimir V.
Rosenthal, Uwe
机构：
[1] Univ Rostock, Leibniz Inst Katalyse eV, D-18059 Rostock, Germany
[2] Russian Acad Sci, AN Nesmeyanov Organoelement Cpds Inst, Moscow 117813, Russia
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2006年 / 45卷 / 25期
关键词：
borate ligands; C-F activation; homogeneous catalysis; polymerization; zirconocene fluorides;
D O I：
10.1002/anie.200600361
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
(Chemical Equation Presented) Not a catalyst killer: In the reaction of 2 with B(C6F5)3, a nucleophilic aromatic substitution with C-F bond cleavage leads to the unexpected difluoride 1. Although the formation of Zr-F species during olefin polymerization by [Cp′2ZrR]+[RB(C6F5) 3]- (Cp′ = substituted or unsubstituted η5-cyclopentadienyl; R = Me, H) catalysts is often described as a deactivation, the catalyst precursor 2 can be regenerated from 1 through treatment with iBu2AlH. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码：4195 / 4198
页数：4
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