Steven R. Bahr, P. Boudjouk
Jun 1, 1993
Citations
0
Influential Citations
43
Citations
Journal
Journal of the American Chemical Society
Abstract
Trityl tetrakis [bis(3,5-trifluoromethyl)phenyl]borate, Ph 3 C + B[3,5-(CF 3 ) 2 C 6 H 3 ] 4 - , abstracts hydride from hydridosilanes, producing Ph 3 CH. Use of a weakly coordinating solvent (i.e., CH 2 Cl 2 ) results in near-quantitative conversion of a trialkylsilane to the fluorosilane. When a more strongly coordinating solvent, e.g., butyronitrile, is used, a nitrile-stabilized silicenium ion (silylnitrilium ion), R 3 Si(NCC 3 H 7 ) + B[3,5-(CF 3 ) 2 C 6 H 3 ] 4 - , is formed. This salt was characterized by NMR ( 1 H, 13 C, 11 B, 19 F, 29 Si) spectroscopy as well as IR spectroscopy and conductivity measurements