Ionic carbenes:: Synthesis, structural characterization, and reactivity of rare-earth metal methylidene complexes

被引：101
作者：
Dietrich, H. Martin [1 ]
Tornroos, Karl W. [1 ]
Anwander, Reiner [1 ]
机构：
[1] Univ Bergen, Dept Chem, N-5007 Bergen, Norway
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2006年 / 128卷 / 29期
关键词：
D O I：
10.1021/ja062523y
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Treatment of mixed chloride tetramethylaluminate polynuclear clusters {Cp*Y[(μ-Me)2AlMe2](μ-Cl)}2 and {Cp*6La6[(μ-Me)3AlMe]4(μ3-Cl)2(μ2-Cl)6} with toluene/THF solutions produces "aluminum-free" methylidene complexes [Cp*3Ln3(μ-Cl)3(μ3-Cl)(μ3-CH2)(THF)3] (Ln = Y, La). The trinuclear methylidene complexes are isostructural in the solid state and feature a sterically well-shielded Schrock-type nucleophilic CH22-unit, which is prone to Tebbe-like methylenation reactions with ketones and aldehydes. The rapid polymerization of γ-valerolactone reveals intrinsic rare-earth metal reactivity. Copyright © 2006 American Chemical Society.
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页码：9298 / 9299
页数：2
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