An Extensive n, π, σ-Electron Delocalized Si4 Ring

被引：36
作者：
Zhang, Shu-Hua [1 ]
Xi, Hong-Wei [2 ]
Lim, Kok Hwa [2 ]
So, Cheuk-Wai [1 ]
机构：
[1] Nanyang Technol Univ, Div Chem & Biol Chem, Singapore 637371, Singapore
[2] Nanyang Technol Univ, Div Chem & Biomol Engn, Singapore 637459, Singapore
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2013年 / 52卷 / 47期
关键词：
aromatic systems; cyclobutadiene; N ligands; silicon; sulfur; X-RAY-STRUCTURE; PHOTOCHEMICAL-TRANSFORMATIONS; CRYSTALLINE MATRIX; DOUBLE-BONDS; CYCLOBUTADIENE; TETRASILACYCLOBUTADIENE; REACTIVITY; 1,3-DIMETHYLCYCLOBUTADIENE; ANTIAROMATICITY; AROMATICITY;
D O I：
10.1002/anie.201305567
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The tetrasilacyclobutadiene [LSi(μ-SiL′)2SiL] (L=PhC(NtBu)2, L′=2,6-iPr2C6H 3NSiMe3) consists of an aromatic silicon-containing four-membered ring in which two π, two σ, and two lone-pair electrons are cyclically delocalized. The electron delocalization was illustrated by theoretical studies and reactivity with elemental sulfur to form the allylic zwitterionic cyclic compound [(LSi)2(μ-SiL′)(μ-Si(S) L′)] with 2π-electron delocalization along the Si3 skeleton. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：12364 / 12367
页数：4
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