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Phenylene-bridged cross-conjugated 1,2,3-trisilacyclopentadienes

Abstract

1,2,3-Trisilacyclopentadienes are obtained from the reactions of cyclotrisilene c-Si3R4 (R = iPr3C6H2) with phenyl and diphenyl acetylene, respectively. With 1,4-diethynyl benzene the cross-conjugated bridging of two of the Si3C2 cycles by a para-phenylene linker is achieved. UV/vis spectroscopy indicates a small but significant effect of cross-conjugation, which is confirmed by TD-DFT calculations. The formation mechanism of the 1,2,3-trisilacyclopentadienes is elucidated by VT NMR.

Type Journal
ISBN 1364-548X (Electronic) 1359-7345 (Linking)
Authors Zhao, H.; Klemmer, L.; Cowley, M. J.; Majumdar, M.; Huch, V.; Zimmer, M.; Scheschkewitz, D.
Responsible Garvan Author Dr Mark Cowley
Publisher Name CHEMICAL COMMUNICATIONS
Published Date 2018-07-24
Status Published in-print
DOI 10.1039/c8cc03297a
URL link to publisher's version https://www.ncbi.nlm.nih.gov/pubmed/29998230