Formation of a Donor-Stabilized Tetrasilacyclobutadiene Dication by a Lewis Acid Assisted Reaction of an N-Heterocyclic Chloro Silylene

被引：72

作者：

Inoue, Shigeyoshi ^{[1
]}

Epping, Jan D. ^{[1
]}

Irran, Elisabeth ^{[1
]}

Driess, Matthias ^{[1
]}

机构：

[1] Tech Univ Berlin, Inst Chem Metalorgan & Inorgan Mat, D-10623 Berlin, Germany

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2011年 / 133卷 / 22期

关键词：

SILYLIUM ION; TRICOORDINATE SILYL; CATION; AROMATICITY; ELEMENTS; SILICON;

D O I：

10.1021/ja2033475

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The first donor-stabilized tetrasilacyclobutadiene dication species has been synthesized and fully characterized. Its unexpected formation occurs by the Lewis acid assisted reaction of the N-heterocyclic chloro silylene [L(Si:)Cl] (L = PhC(NtBu)(2); amidinate) with Cp*ZrCl3 (Cp* = pentamethylcyclopentadienyl) in the molar ratio of 3:2. Remarkably, the four-membered Si-4 core consists of two N-donor stabilized silylium subunits and two silylene-like moieties. The dicationic charge is somewhat delocalized on the Si-4, core, which is supported by DFT calculations.

引用

页码：8514 / 8517

页数：4

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