Lewis Superacidic Ionic Liquids with Tricoordinate Borenium Cations

The first examples of ionic liquids based on borenium cations, [BCl2L]+, 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, δ31P=12...

Full description

Saved in:
Bibliographic Details
Published in:Angewandte Chemie 2015-12, Vol.127 (49), p.15183-15186
Main Authors: Coffie, Sesime, Hogg, James M., Cailler, Lucie, Ferrer-Ugalde, Albert, Murphy, Richard W., Holbrey, John D., Coleman, Fergal, Swadźba-Kwaśny, Małgorzata
Format: Article
Language:English
Subjects:
Acidity
Bor
Borenium-Kationen
Cations
Chemical bonds
Chemistry
Environmental extremism
Extreme values
Gruppe-13-Elemente
Ionic liquids
Ionische Flüssigkeiten
Ions
Lewis-Säuren
Liquids
Solvents
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The first examples of ionic liquids based on borenium cations, [BCl2L]+, 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, δ31P=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. Borenium‐Supersäuren: Die lösungsmittelfreie Synthese von ionischen Flüssigkeiten auf der Basis von Borenium‐Kationen und Chlormetallat‐Anionen führte zu Lewis‐Supersäuren mit Gutmann‐Akzeptorzahlen bis zu 182. Die Lewis‐Acidität wurde durch das Fehlen eines Lösungsmittels in der ionischen Flüssigkeitsumgebung verstärkt.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201508653