Hunger, J. and Stoppa, A. and Buchner, Richard and Hefter, Glenn (2008) From Ionic Liquid to Electrolyte Solution: Dynamics of 1-N-Butyl-3-N-methylimidazolium Tetrafluoroborate/Dichloromethane Mixtures. Journal of Physical Chemistry B 112 (41), pp. 12913-12919.
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Dielec. spectra have been measured at 25 °C for mixts. of the room temp. ionic liq. 1-N-butyl-3-N-methylimidazolium tetrafluoroborate (IL) with dichloromethane (DCM) over the entire compn. range at frequencies 0.2 .ltorsim. ν/GHz ≤ 89. The spectra could be satisfactorily fitted by assuming only two relaxation modes: a Cole-Cole process at lower frequencies and a Debye process at higher frequencies. However, detailed anal. indicated that both spectral features contain addnl. modes, which could not be resolved due to overlaps. The spectra indicate that the IL appears to retain its chem. character to extraordinarily high levels of diln. (xIL ⪆ 0.5) in DCM. At even higher dilns. (xIL .ltorsim. 0.3), the IL behaves as a conventional but strongly assocd. electrolyte.
|Institutions:||Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > PD Dr. Richard Buchner|
|Keywords:||butylmethylimidazolium fluoroborate methylene chloride mixt dielec spectra|
|Subjects:||500 Science > 540 Chemistry & allied sciences|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||08 Jun 2012 12:40|
|Last Modified:||08 Jun 2012 12:40|
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