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Taming a silyldiium cation and its reactivity towards sodium phosphaethynolate

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Abstract

A dicationic bis(NHC)-stabilised silyldiium complex, [bis(NHC)-SiPh2]2+ (72+) (bis(NHC) = [CH2(NC3H2NDipp)2], Dipp = 2,6-iPr2C6H3), was synthesised for the first time. It reacts with sodium phosphaethynolate (NaOCP) as a source of monoanionic phosphorus to give the P-insertion product [bis(NHC)-PSiPh2]+ (8+). The latter comprises a seven-membered heterocycle containing a Si–P moiety which can easily be desilylated when exposed to dichlorophosphanes as exemplified by the synthesis of the diphosphanide cations [bis(NHC)-PPCy]+ (9+) and [bis(NHC)-PPPh]+ (10+).

Graphical abstract: Taming a silyldiium cation and its reactivity towards sodium phosphaethynolate

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Publication details

The article was received on 21 Sep 2018, accepted on 09 Nov 2018 and first published on 09 Nov 2018


Article type: Communication
DOI: 10.1039/C8CC07632D
Citation: Chem. Commun., 2018, Advance Article
  • Open access: Creative Commons BY-NC license
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    Taming a silyldiium cation and its reactivity towards sodium phosphaethynolate

    A. Hermannsdorfer, D. W. Stephan and M. Driess, Chem. Commun., 2018, Advance Article , DOI: 10.1039/C8CC07632D

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