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[Sb(C6F5)4][B(C6F5)4]: An air stable, Lewis acidic stibonium salt that activates strong element-fluorine bonds.
MedLine Citation:
PMID:  24946107     Owner:  NLM     Status:  Publisher    
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.
Baofei Pan; Francois P Gabbaï
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-6-19
Journal Detail:
Title:  Journal of the American Chemical Society     Volume:  -     ISSN:  1520-5126     ISO Abbreviation:  J. Am. Chem. Soc.     Publication Date:  2014 Jun 
Date Detail:
Created Date:  2014-6-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503056     Medline TA:  J Am Chem Soc     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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