A Dimeric NHC-Silicon Monotelluride: Synthesis, Isomerization and Reactivity.

Title A Dimeric NHC-Silicon Monotelluride: Synthesis, Isomerization and Reactivity.
Authors C.W. So; Y.C. Chan; B.X. Leong; Y. Li; M.C. Yang; Y. Li; M. Der Su
Journal Angew Chem Int Ed Engl
DOI 10.1002/anie.201705168
Abstract

The reaction of the NHC-disilicon(0) complex [(IAr)Si=Si(IAr)] (1, IAr = :C{N(Ar)C(H)}2, Ar = 2,6-iPr2C6H3) with two equivalents of elemental tellurium in toluene at room temperature for three days afforded a mixture of the first dimeric NHC-silicon monotelluride [(IAr)Si=Te]2 (2) and its isomeric complex [(IAr)Si(?-Te)Si(IAr)=Te] (3). When the same reaction was performed for ten days, only 3 was isolated from the reaction mixture. In addition, compound 1 reacted with four equivalents of elemental tellurium in toluene for four weeks, which proceeded through the formation of 2, 3 and the NHC-disilicon tritelluride complex [{(IAr)Si(=Te)}2Te] (5-Te), to form the dimeric NHC-silicon ditelluride [(IAr)Si(=Te)(?-Te)]2 (4). The reactions are in line with theoretical mechanistic studies for the formation of 4. In addition, compound 3 reacted with one equivalent of elemental sulfur in toluene to form the first NHC-disilicon sulfur ditelluride complex [{(IAr)Si(=Te)}2S] (5-S).

Citation C.W. So; Y.C. Chan; B.X. Leong; Y. Li; M.C. Yang; Y. Li; M. Der Su.A Dimeric NHC-Silicon Monotelluride: Synthesis, Isomerization and Reactivity.. Angew Chem Int Ed Engl. 2017. doi:10.1002/anie.201705168

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Silicon

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Tellurium

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