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Open Access Publications from the University of California

Triethylsilyl perfluoro-tetraphenylborate, [Et3Si+][F20-BPh4-], a widely used nonexistent compound

  • Author(s): Nava, M
  • Reed, CA
  • et al.

Published Web Location

The commonly used triethylsilyl perfluoro-tetraphenylborate salt, [Et3Si+][F20-BPh4-], has been misidentified. As prepared, the cation is a hydride-bridged silane adduct [R3Si-H-SiR3+]. Under favorable circumstances it can be an effective source of the triethylsilylium ion Et3Si+, but in the absence of a stabilizing base the potent electrophilicity of Et3Si+decomposes the "inert" F20-BPh4-counterion. © 2011 American Chemical Society.

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