[Zurück]

M. Holzweber, R. Lungwitz, D. Dörfler, S. Spange, M. Koel, H. Hutter, W. Linert:
"Mutual Lewis Acid-Base Interaction of Cations and Anions in Ionic Liquids";
Poster: 1 5th JCF-Frühjahrssymposium, BErlin; 06.03.2013 - 09.03.2013; in: "15th JCF-Frühjahrssymposium March 6th-9th, 201 3 Berlin", (2013), S. 162.

Solute properties are known to be strongly influenced by solvent molecules due to
solvation. This is due to mutual interaction as both the properties of the solute
and of the solvent strongly depend on each other. The presented work is based
on the idea that ionic liquids are cations solvated by anions and anions solvated
by cations. To show this (in this system strongly pronounced) interaction the long
time established donor-acceptor concept for solvents and ions in solution by Viktor
Gutmann is extended to ionic liquids. A number of solvent parameters, such as the
Kamlet-Abboud-Taft and the Dimroth-Reichardt ET scale for ionic liquids neglect
this mutual influence, which, however, seems to be in fact necessary to get a proper
description of ionic liquid properties. It is shown how strong such parameters vary
when the influence of the counter ion is taken into account. Furthermore, acceptor
and donor numbers for ionic liquids are presented.