Heteronuclear NOE spectroscopy of ionic liquids

Yves Lingscheid; Sven Arenz; Ralf Giernoth

doi:10.1002/cphc.201100622

Heteronuclear NOE spectroscopy of ionic liquids

Chemphyschem. 2012 Jan 16;13(1):261-6. doi: 10.1002/cphc.201100622. Epub 2011 Oct 14.

Authors

Yves Lingscheid¹, Sven Arenz, Ralf Giernoth

Affiliation

¹ Universität zu Köln, Department für Chemie, Greinstr. 4, 50939 Köln, Germany.

PMID: 22002917
DOI: 10.1002/cphc.201100622

Abstract

(19)F,(1)H HOESY experiments with three ionic liquids ([bmim]BF(4), [bmim]PF(6) and [emim]BF(4)) were run in two different solvents and neat. The results give preferred probabilities of presence and enable us to systematically study interactions between the cations and the anions in the ionic liquid phase by NMR spectroscopy. The influence of different solvents and of the presence or absence of air (i.e. oxygen) is discussed. This enabled us to substantially speed up the NMR experiments and to develop a more precise method for the investigation of liquid-phase structures in ionic liquids.