具有不等价次级相互作用的稀土芳基硅氮化合物。

Rare earth arylsilazido compounds with inequivalent secondary interactions.

机构信息

Department of Chemistry and US DOE Ames Laboratory, 1605 Gilman Hall, Iowa State University, Ames, IA 50011, USA.

出版信息

Chem Commun (Camb). 2018 Jun 28;54(53):7318-7321. doi: 10.1039/c8cc03186j.

Abstract

A new bulky silazido ligand, -N(SiHMe2)Dipp (Dipp = C6H3-2,6-iPr2), supports planar, three-coordinate homoleptic rare earth complexes Ln{N(SiHMe2)Dipp}3 (Ln = Sc, Y, and Lu), each containing three secondary Ln↼HSi interactions and one agostic CH bond. Y{N(SiHMe2)Dipp}3 and acetophenone react via hydrosilylation, rather than by insertion into the Y-N bond or by enolate formation.

摘要

一种新型的庞大的硅氮烷配体，-N(SiHMe2)Dipp（Dipp = C6H3-2,6-iPr2），支持平面三配位同核稀土配合物 Ln{N(SiHMe2)Dipp}3（Ln = Sc、Y 和 Lu），每个配合物都含有三个次级 Ln↼HSi 相互作用和一个桥接的 CH 键。Y{N(SiHMe2)Dipp}3 和苯乙酮通过氢硅化反应反应，而不是通过插入 Y-N 键或通过烯醇化物形成。