Lewis Superacidic Ionic Liquids with Tricoordinate Borenium Cations.
The first examples of ionic liquids based on borenium cations, [BCl2 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, 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.
The QUILL Research Centre, The School of Chemistry and Chemical Engineering, The Queen's University of Belfast, Belfast, BT9 5AG (UK).
Sesime
S
Coffie
The QUILL Research Centre, The School of Chemistry and Chemical Engineering, The Queen's University of Belfast, Belfast, BT9 5AG (UK).
James M
JM
Hogg
The QUILL Research Centre, The School of Chemistry and Chemical Engineering, The Queen's University of Belfast, Belfast, BT9 5AG (UK).
Lucie
L
Cailler
The QUILL Research Centre, The School of Chemistry and Chemical Engineering, The Queen's University of Belfast, Belfast, BT9 5AG (UK).
Albert
A
Ferrer-Ugalde
The QUILL Research Centre, The School of Chemistry and Chemical Engineering, The Queen's University of Belfast, Belfast, BT9 5AG (UK).
Richard W
RW
Murphy
The QUILL Research Centre, The School of Chemistry and Chemical Engineering, The Queen's University of Belfast, Belfast, BT9 5AG (UK).
John D
JD
Holbrey
The QUILL Research Centre, The School of Chemistry and Chemical Engineering, The Queen's University of Belfast, Belfast, BT9 5AG (UK). f.coleman@qub.ac.uk.
Fergal
F
Coleman
The QUILL Research Centre, The School of Chemistry and Chemical Engineering, The Queen's University of Belfast, Belfast, BT9 5AG (UK). m.swadzba-kwasny@qub.ac.uk.
Małgorzata
M
Swadźba-Kwaśny
Group 13 elements; Lewis acids; borenium cations; boron; ionic liquids