Issue 58, 2022

Twisted push–pull disilenes obtained by direct 1,2-hydro/chloroborylation of a silylone

Abstract

Overcrowded 1-amino-2-boryldisilenes were isolated as blue crystals by the direct hydro/chloroborylation of a cyclic (alkyl)(amino)silylene-coordinated monatomic silicon complex (silylone) with 9-BBN (BBN = borabicyclo[3.3.1]nonane) hydride/chloride. The extreme twisting and push–pull effect around the Si[double bond, length as m-dash]Si bonds resulted in strong polarization of the Si[double bond, length as m-dash]Si bond. The disilenes exhibit longest-wavelength absorptions above 600 nm due to the charge-transfer-type π → π* transitions and undergo reversible 1,3-hydride/halide migration in solution reflecting the electrophilic terminal silicon atoms.

Graphical abstract: Twisted push–pull disilenes obtained by direct 1,2-hydro/chloroborylation of a silylone

Supplementary files

Article information

Article type
Communication
Submitted
15 Apr 2022
Accepted
21 Jun 2022
First published
22 Jun 2022

Chem. Commun., 2022,58, 8061-8064

Twisted push–pull disilenes obtained by direct 1,2-hydro/chloroborylation of a silylone

T. Koike and T. Iwamoto, Chem. Commun., 2022, 58, 8061 DOI: 10.1039/D2CC02160A

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