Stereospecific polymerization of isoprene with molecular and MCM-48-Grafted Lanthanide(III) tetraalkylaluminates

被引：150
作者：
Fischbach, A
Klimpel, MG
Widenmeyer, M
Herdtweck, E
Scherer, W
Anwander, R
机构：
[1] Tech Univ Munich, Inst Anorgan Chem, D-85747 Garching, Germany
[2] Univ Augsburg, Inst Phys, D-86159 Augsburg, Germany
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2004年 / 43卷 / 17期
关键词：
lanthanides; mesoporous materials; neodymium; polymerization; Ziegler catalysts;
D O I：
10.1002/anie.200352730
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Hard graft: Heterobimetallic peralkylated complexes [Ln{(μ-R) 2(AIR2)3] (R =Me, Et) can be exploited to study metal-size effects in "Ziegler Mischkatalysatoren". Binary precatalyst system [Nd(AlMe3)4]/Et2AlCl and heterogenized single-component variants, such as [Nd(AlMe3) 4] @Et2AlCl@MCM-49 (see picture) efficiently transform isoprene to a high-cis polymer (> 99%).
引用
收藏
页码：2234 / 2239
页数：6
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