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

Chemical Communications : Chem Comm
Hui ZhaoDavid Scheschkewitz

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.

References

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Citations

Jul 16, 2019·Chemistry : a European Journal·Lukas KlemmerDavid Scheschkewitz
Oct 9, 2019·Chemical Communications : Chem Comm·Benedikt J GuddorfFelicitas Lips
Sep 30, 2020·Angewandte Chemie·Paresh Kumar MajhiDavid Scheschkewitz
Oct 13, 2021·Chemistry : a European Journal·Kevin SchwedtmannFelicitas Lips

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Methods Mentioned

BETA
NMR
X-ray

Software Mentioned

SHELXL

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