The chemistry of CaII and YbII:: Astoundingly similar but not equal!

被引：164

作者：

Harder, S ^{[1
]}

机构：

[1] Univ Konstanz, Fachbereich Chem, D-78457 Constance, Germany

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2004年 / 43卷 / 20期

关键词：

alkaline-earth metals; lanthanicles; polystyrene; stereoselective polymerization;

D O I：

10.1002/anie.200353557

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Not a red/green stereographic, but a plot showing the striking similarity between a Ca and Yb complex. The molecular structures, and the NMR and IR spectra of these Ca/Yb benzyl complexes are nearly identical. However, their reactivity in styrene polymerization is completely different: an internally coordinated dibenzylytterbium (II) complex produces polystyrene of high syndiotacticity (r = 94.9%, rr = 90.0%).

引用

页码：2714 / 2718

页数：5

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