Silicenium Ions: Quantum Chemical Computations

Maerker, Christoph; Schleyer, Paul von Ragué

doi:10.1002/9780470682531.pat0172

Cited by 1 publication

(1 citation statement)

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“…On the other hand, most of the results are specific for a selected family of silyl cations. To the best of our knowledge, there has been no general computational treatise of silyl cations in the last 20 years . We therefore briefly summarize some general findings, which are indispensable in the context of this review.…”

Section: Structure and Properties Of Silylium Ionsmentioning

confidence: 99%

Silylium Ions: From Elusive Reactive Intermediates to Potent Catalysts

et al. 2021

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The history of silyl cations has all the makings of a drama but with a happy ending. Being considered reactive intermediates impossible to isolate in the condensed phase for decades, their actual characterization in solution and later in solid state did only fuel the discussion about their existence and initially created a lot of controversy. This perception has completely changed today, and silyl cations and their donor-stabilized congeners are now widely accepted compounds with promising use in synthetic chemistry. This review provides a comprehensive summary of the fundamental facts and principles of the chemistry of silyl cations, including reliable ways of their preparation as well as their physical and chemical properties. The striking features of silyl cations are their enormous electrophilicity and as such reactivity as super Lewis acids as well as fluorophilicity. Known applications rely on silyl cations as reactants, stoichiometric reagents, and promoters where the reaction success is based on their steady regeneration over the course of the reaction. Silyl cations can even be discrete catalysts, thereby opening the next chapter of their way into the toolbox of synthetic methodology.

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Section: Structure and Properties Of Silylium Ionsmentioning

confidence: 99%