[Sb(CF)][B(CF)]: an air stable, Lewis acidic stibonium salt that activates strong element-fluorine bonds. Academic Article

abstract

• As part of our ongoing interest in main group Lewis acids for fluoride anion complexation and element-fluorine bond activation, we have synthesized the stibonium borate salt [Sb(C6F5)4][B(C6F5)4] (3). The perfluorinated stibonium cation [Sb(C6F5)4](+) present in this salt is a potent Lewis acid which abstracts a fluoride anion from [SbF6](-) and [BF(C6F5)3](-) indicating that it is a stronger Lewis acid than SbF5 and B(C6F5)3. The unusual Lewis acidic properties of 3 are further reflected by its ability to polymerize THF or to promote the hydrodefluorination of fluoroalkanes in the presence of Et3SiH. While highly reactive in solution, 3 is a perfectly air stable salt, making it a convenient Lewis acidic reagent.

authors

• Gabbai, Francois

published proceedings

• J Am Chem Soc

altmetric score

• 1

author list (cited authors)

• Pan, B., & Gabbai, F. P.

citation count

• 100

complete list of authors

• Pan, Baofei||Gabbaiï, François P

publication date

• July 2014

publisher

• American Chemical Society (ACS)  Publisher

published in

• Journal of the American Chemical Society  Journal

keywords

• 0302 Inorganic Chemistry

PubMed Central ID

• 24946107

Digital Object Identifier (DOI)

• 10.1021/ja505214m

start page

• 9564

end page

• 9567

volume

• 136

issue

• 27