A base-stabilized 2-silaallene

A base-stabilized 2-silaallene

The reaction of [CH2(PPh2S)2] (1) with 2 equiv of MeLi in Et2O followed by addition of 0.5 equiv of SiCl4 afforded the base-stabilized 2-silaallene [(PPh2S)2CSiC(PPh2S)2] (2). It has been characterized by X-ray crystallography, NMR spectroscopy, and theoretical studies. The results show that compoun...

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Bibliographic Details
Main Authors: Yang, Yi-Fan, Foo, Cechao, Xi, Hong Wei, Li, Yongxin, Lim, Kok Hwa, So, Cheuk-Wai
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/105686
http://hdl.handle.net/10220/16609
http://dx.doi.org/10.1021/om301175p
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Institution: Nanyang Technological University
Language: English
Description
Summary:The reaction of [CH2(PPh2S)2] (1) with 2 equiv of MeLi in Et2O followed by addition of 0.5 equiv of SiCl4 afforded the base-stabilized 2-silaallene [(PPh2S)2CSiC(PPh2S)2] (2). It has been characterized by X-ray crystallography, NMR spectroscopy, and theoretical studies. The results show that compound 2 comprises a C¯–Si2+–C¯ ylidic skeleton with a negative charge at the Cmethanediide atoms and two positive charges at the Si atom. The reaction of 2 with excess PriN═C═NPri in refluxing toluene gave the thiophosphinoyl-stabilized silene [(PPh2S)2C–—Si+(NPri)2C═C(PPh2S)2] (3).

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