An extensive n, π, σ-electron delocalized Si4 ring

Shu Hua Zhang; Hong Wei Xi; Kok Hwa Lim; Cheuk Wai So

doi:10.1002/anie.201305567

An extensive n, π, σ-electron delocalized Si₄ ring

Shu Hua Zhang, Hong Wei Xi, Kok Hwa Lim, Cheuk Wai So

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	12364-12367
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	52
Issue number	47
DOIs	https://doi.org/10.1002/anie.201305567
Publication status	Published - Nov 18 2013
Externally published	Yes

ASJC Scopus Subject Areas

Catalysis
General Chemistry

Keywords

aromatic systems
cyclobutadiene
N ligands
silicon
sulfur

Access to Document

10.1002/anie.201305567

Cite this

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title = "An extensive n, π, σ-electron delocalized Si4 ring",

abstract = "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.",

keywords = "aromatic systems, cyclobutadiene, N ligands, silicon, sulfur",

author = "Zhang, {Shu Hua} and Xi, {Hong Wei} and Lim, {Kok Hwa} and So, {Cheuk Wai}",

year = "2013",

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volume = "52",

pages = "12364--12367",

journal = "Angewandte Chemie - International Edition",

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T1 - An extensive n, π, σ-electron delocalized Si4 ring

AU - Zhang, Shu Hua

AU - Xi, Hong Wei

AU - Lim, Kok Hwa

AU - So, Cheuk Wai

PY - 2013/11/18

Y1 - 2013/11/18

N2 - 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.

AB - 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.

KW - aromatic systems

KW - cyclobutadiene

KW - N ligands

KW - silicon

KW - sulfur

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