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Issue 60, 2018
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Phenylene-bridged cross-conjugated 1,2,3-trisilacyclopentadienes

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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.

Graphical abstract: Phenylene-bridged cross-conjugated 1,2,3-trisilacyclopentadienes

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The article was received on 23 Apr 2018, accepted on 22 Jun 2018 and first published on 26 Jun 2018

Article type: Communication
DOI: 10.1039/C8CC03297A
Citation: Chem. Commun., 2018,54, 8399-8402
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    Phenylene-bridged cross-conjugated 1,2,3-trisilacyclopentadienes

    H. Zhao, L. Klemmer, M. J. Cowley, M. Majumdar, V. Huch, M. Zimmer and D. Scheschkewitz, Chem. Commun., 2018, 54, 8399
    DOI: 10.1039/C8CC03297A

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