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Heteronuclear NOE Spectroscopy of Ionic Liquids
Author(s) -
Lingscheid Yves,
Arenz Sven,
Giernoth Ralf
Publication year - 2012
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201100622
Subject(s) - ionic liquid , heteronuclear molecule , chemistry , nuclear magnetic resonance spectroscopy , spectroscopy , phase (matter) , ionic bonding , analytical chemistry (journal) , inorganic chemistry , ion , organic chemistry , catalysis , physics , quantum mechanics
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.