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Lewis Superacidic Ionic Liquids with Tricoordinate Borenium Cations
Author(s) -
Coffie Sesime,
Hogg James M.,
Cailler Lucie,
FerrerUgalde Albert,
Murphy Richard W.,
Holbrey John D.,
Coleman Fergal,
SwadźbaKwaśny Małgorzata
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201508653
Subject(s) - ionic liquid , chemistry , lewis acids and bases , ionic bonding , solvent , inorganic chemistry , acceptor , affinities , ion , organic chemistry , stereochemistry , catalysis , physics , condensed matter physics
The first examples of ionic liquids based on borenium cations, [BCl 2 L] + , are reported. These compounds form highly Lewis acidic liquids under solvent‐free conditions. Their acidity was quantified by determining the Gutmann acceptor number (AN). Extremely high ANs were recorded (up to AN=182, δ 31P =120 ppm), demonstrating that these borenium ionic liquids are the strongest Lewis superacids reported to date, with the acidity enhanced by the ionic liquid environment.