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Issue 46, 2017
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Chalcogen-atom transfer and exchange reactions of NHC-stabilized heavier silaacylium ions

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Abstract

Heavier analogues of silaacylium ions 2–4 ([m-TerSiE(NHC)2]Cl; m-Ter = 2,6-Mes2C6H3; Mes = 2,4,6-Me3C6H2; 2 (E = S), 3 (E = Se), 4 (E = Te)) were synthesized by the reaction of the NHC-stabilized silyliumylidene cation 1 with elemental chalcogens. Fascinating regeneration of 1 from the reaction of 2–4 with AuI was achieved, as successful recovery of a parent Si(II) species from a silachalcogen Si(IV) compound. Furthermore, unique chalcogen exchange reactions from 4 → 3 → 2 were observed in line with the calculated silicon–chalcogen bond energies.

Graphical abstract: Chalcogen-atom transfer and exchange reactions of NHC-stabilized heavier silaacylium ions

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Publication details

The article was received on 24 Oct 2017, accepted on 27 Oct 2017 and first published on 27 Oct 2017


Article type: Communication
DOI: 10.1039/C7DT03998K
Citation: Dalton Trans., 2017,46, 16014-16018
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    Chalcogen-atom transfer and exchange reactions of NHC-stabilized heavier silaacylium ions

    D. Sarkar, D. Wendel, S. U. Ahmad, T. Szilvási, A. Pöthig and S. Inoue, Dalton Trans., 2017, 46, 16014
    DOI: 10.1039/C7DT03998K

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