Hydrogen-Bond Dynamics
in a Protic Ionic Liquid: Evidence
of Large-Angle Jumps
Posted on 2015-12-16 - 21:59
We study the molecular rotation of the protic room-temperature
ionic liquid ethylammonium nitrate with dielectric relaxation spectroscopy
and femtosecond-infrared spectroscopy (fs-IR) of the ammonium N–H
vibrations. The results suggest that the rotation of ethylammonium
ion takes place via large angular jumps. Such nondiffusive reorientational
dynamics is unique to strongly hydrogen-bonded liquids such as water
and indicates that the intermolecular interaction is highly directional
in this class of ionic liquids.
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Hunger, Johannes; Sonnleitner, Thomas; Liu, Liyuan; Buchner, Richard; Bonn, Mischa; Bakker, Huib J. (2015). Hydrogen-Bond Dynamics
in a Protic Ionic Liquid: Evidence
of Large-Angle Jumps. ACS Publications. Collection. https://doi.org/10.1021/jz301334j