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

Phenylene-bridged cross-conjugated 1,2,3-trisilacyclopentadienes.
Chem Commun (Camb). 2018 Jul 12;:
Authors: Zhao H, Klemmer L, Cowley MJ, Majumdar M, Huch V, Zimmer M, Scheschkewitz D
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.
PMID: 29998230 [PubMed - as supplied by publisher]

Source: Chemical Communications - July 12, 2018 Category: Chemistry Authors: Zhao H, Klemmer L, Cowley MJ, Majumdar M, Huch V, Zimmer M, Scheschkewitz D Tags: Chem Commun (Camb) Source Type: research