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Conjugate Bronsted-Lewis superacids in fluorosulfuric acid - Hammett acidity function and electrical conductivity studies of Ta(V), Nb(V) and Sb(V) Lewis acids

TitleConjugate Bronsted-Lewis superacids in fluorosulfuric acid - Hammett acidity function and electrical conductivity studies of Ta(V), Nb(V) and Sb(V) Lewis acids
Publication TypeJournal Article
Year of Publication1998
AuthorsCicha, WV, Zhang, DL, Aubke, F
JournalJournal of Fluorine Chemistry
Volume89
Pagination117-123
Date PublishedApr
Type of ArticleArticle
ISBN Number0022-1139
KeywordsBEHAVIOR, BIS(FLUOROSULFATE), Bronsted-Lewis, conjugate, CONVENIENT, FLUORIDE, GOLD(III) FLUOROSULFATE, H2SO4-HSO3F, ION, MOLECULAR-STRUCTURES, protonic acid, SYSTEMS, TETRAKIS(FLUOROSULFATO)AURATE(III)
Abstract

{Conjugate Bronsted-Lewis superacids in fluorosulfuric acid are studied by two techniques. Hammett acidity function studies on HSO3F-Ta(SO3F)(5) in the concentration range of 0-3.4 mol% of Lewis acid are reported. The conjugate system HSO3F-Ta(SO3F)(5) shows in this range of Lewis acid concentration acidities equal or higher to those of HSO3F-3SO(3)-SbF5, which is commonly assumed to be the strongest conjugate protonic acid. Electrical conductivities of the neat Lewis acids of the type MFn(SO3F)(5-n)

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