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Superacidity of Boron Acids H 2 (B 12 X 12 ) (X=Cl, Br)
Author(s) -
Avelar Amy,
Tham Fook S.,
Reed Christopher A.
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200900214
Subject(s) - boron , chemistry , benzene , icosahedral symmetry , anhydrous , halide , ion , crystallography , inorganic chemistry , medicinal chemistry , stereochemistry , organic chemistry
Acid remarks : The anhydrous diprotic boron acids H 2 (B 12 X 12 ) (X=Cl, Br; see picture, B orange, X green) are the first examples of diprotic superacids and may be the strongest acids yet isolated. Both protons protonate benzene to give benzenium ion salts that are stable at room temperature. These acids owe their existence to the stability of the icosahedral B 12 cluster with its dinegative charge buried beneath a layer of halide substituents.