1. A Dimeric NHC-Silicon Monotelluride: Synthesis, Isomerization, and Reactivity.
- Author
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Chan, Yuk‐Chi, Leong, Bi‐Xiang, Li, Yongxin, Yang, Ming‐Chung, Li, Yan, Su, Ming‐Der, and So, Cheuk‐Wai
- Subjects
ISOMERIZATION ,DIMERS ,SILICON ,CARBENES ,TELLURIDES ,REACTIVITY (Chemistry) ,CHEMICAL synthesis - Abstract
The reaction of the NHC-disilicon(0) complex [(I
Ar )Si=Si(IAr )] ( 1, IAr =:C{N(Ar)C(H)}2 , Ar=2,6- iPr2 C6 H3 ) with two equiv of elemental Te 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(μ-Te)Si(IAr )=Te] ( 3). When the same reaction was performed for ten days, only 3 was isolated from the reaction mixture. Compound 1 reacted with four equiv of elemental Te in toluene for four weeks, which proceeded through the formation of 2, 3 and the NHC-disilicon tritelluride complex [{(IAr )Si(=Te)}2 Te] ( 5-Te), to form the dimeric NHC-silicon ditelluride [(IAr )Si(=Te)(μ-Te)]2 ( 4). The reactions are in line with theoretical mechanistic studies for the formation of 4. Compound 3 reacted with one equiv of elemental sulfur in toluene to form the first NHC-disilicon sulfur ditelluride complex [{(IAr )Si(=Te)}2 S] ( 5-S). [ABSTRACT FROM AUTHOR]- Published
- 2017
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