This work is supported by Academic Research Fund Tier 1 (RG22/12 to C.-W.S. and RG 73/10 to K.H.L.).
An Extensive n, π, σ-Electron Delocalized Si4 Ring†
Article first published online: 2 OCT 2013
Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 52, Issue 47, pages 12364–12367, November 18, 2013
How to Cite
Zhang, S.-H., Xi, H.-W., Lim, K. H. and So, C.-W. (2013), An Extensive n, π, σ-Electron Delocalized Si4 Ring. Angew. Chem. Int. Ed., 52: 12364–12367. doi: 10.1002/anie.201305567
- Issue published online: 12 NOV 2013
- Article first published online: 2 OCT 2013
- Manuscript Revised: 6 AUG 2013
- Manuscript Received: 28 JUN 2013
- Academic Research Fund Tier 1. Grant Numbers: RG22/12, RG 73/10
- aromatic systems;
- N ligands;
The tetrasilacyclobutadiene [LSi(μ-SiL′)2SiL] (L=PhC(NtBu)2, L′=2,6-iPr2C6H3NSiMe3) 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.