title: Chlorometallate(III) ionic liquids as Lewis acidic catalysts--a quantitative study of acceptor properties.
abstract: The Gutmann Acceptor Number (AN), which is a quantitative measure of Lewis acidity, has been estimated using the (31)P NMR chemical shift of a probe molecule, triethylphosphine oxide, for a range of chlorometallate(III) ionic liquids, based on Group 13 metals (aluminium(III), gallium(III) and indium(III)) and the 1-octyl-3-methylimidazolium cation, at different compositions. The results were interpreted in terms of extant speciation studies of chlorometallate(III) ionic liquids, and compared with a range of standard molecular solvents and acids. The value of these data were illustrated in terms of the selection of appropriate ionic liquids for specific applications.
authors.affiliation: QUILL, The Queen's University of Belfast, Belfast, UK BT9 5AG.
authors.forename: Julien
authors.initials: J
authors.lastname: Estager
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Oliferenko
authors.forename: Kenneth R
authors.initials: KR
authors.lastname: Seddon
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Swadźba-Kwaśny