Bis(silylenyl)- and Bis(germylenyl)-Substituted Ferrocenes: Synthesis, Structure, and Catalytic Applications of Bidentate Silicon(II)-Cobalt Complexes

被引:146
作者
Wang, Wenyuan [1 ]
Inoue, Shigeyoshi [1 ]
Enthaler, Stephan [1 ]
Driess, Matthias [1 ]
机构
[1] Tech Univ Berlin, Dept Chem Met Organ & Inorgan Mat, D-10623 Berlin, Germany
关键词
cycloadditions; germanium; pyridines; silicon; transition-metal complex; COORDINATION CHEMISTRY; SILYLENE; REACTIVITY; PYRIDINES; COMPOUND; BOND; CYCLOTRIMERIZATION; LIGANDS; ALKYNES; MILD;
D O I
10.1002/anie.201202175
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Strong bite: The two respective Si II and Ge II centers in ferrocene-containing bis(silylene) and bis(germylene) ligands 1 can serve as excellent donors, as shown in the formation of Co complexes 2 (see scheme, Cp=· 5-cyclopentadienyl). Unexpectedly, only the bis(silylene)-Co complex 2 is a precatalyst for the [2+2+2] cycloaddition of phenylacetylene and MeCN, possibly because of a stronger coordination of the Ge II donor centers to Co. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码:6167 / 6171
页数:5
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