The Search for an Isolable Silyl Cation Must Continue
Authors:
- 1 October 1993
- journal article
- research article
- Published by Wiley in Angewandte Chemie International Edition
- Vol. 32 (10) , 1471-1473
Abstract
Evidently a σ complex and not a free uncomplexed silyl cation is present in the crystals of 1· toluene. This follows from ab initio studies into the structure of the cationic complexes [Me3Sitoluene]+, [Me3Sibenzene]+, and [H3Sibenzene]+ as well as from IGLO calculations of the δ(29Si) values of these complexes. The differences between these and σ complexes with alkyl groups can be ascribed to the more effective CSi hyperconjugation. Compound 1. toluene was recently described as “the first free silyl cation”. equation imageKeywords
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