[Li4(CH2NMe2)4(THF)4]:: An unusual tetrameric but not tetrahedral σ-organolithium compound

被引：20

作者：

Bruhn, C ^{[1
]}

Becke, F ^{[1
]}

Steinborn, D ^{[1
]}

机构：

[1] Univ Halle Wittenberg, Inst Anorgan Chem, D-06120 Halle, Germany

来源：

ORGANOMETALLICS | 1998年 / 17卷 / 10期

关键词：

D O I：

10.1021/om971020l

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Recrystallization of unsolvated LiCH2NMe2 (1) from n-hexane\THF\diethyl ether gave [Li-4(CH2NMe2)(4)(THF)(4)] (2), which lost THF easily in vacuo to regenerate compound 1. In the solid state, 2 is tetrameric (C-i symmetry). There are two different (N,N-dimethylamino)methyl ligands with a 1,2 kappa C:3 kappa N and 1,3 kappa-C:1 kappa N coordination, respectively. Two Lithium centers are pentacoordinated by Li, N and three C atoms, and the other two adopt tetrahedral coordination, defined by C, N, and two O atoms. The structure of 2 can be understood as that of an opened Li-4 tetrahedron.

引用

页码：2124 / 2126

页数：3

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