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- Title
Imidazolium Based Ionic Liquids: Impact of the Cation Symmetry and Alkyl Chain Length on the Enthalpy of Vaporization.
- Authors
Yermalayeu, Andrei V.; Zaitsau, Dzmitry H.; Loor, Manuel; Schaumann, Julian; Emel'yanenko, Vladimir N.; Schulz, Stephan; Verevkin, Sergey P.
- Abstract
The vaporization thermodynamics of symmetric imidazolium based ionic liquids of the general formula [C nC nIm][Br] with the chains length n = 4, 5, 6, and 8 were investigated using a combination of DSC, TGA, and QCM methods with quantum chemical calculations. Comparison of vaporization enthalpies for the symmetric ([C nC nIm][Br]) and asymmetric imidazolium based ILs ([C nmim][Br]) revealed a general trend with the lower vaporization enthalpies of the symmetric species indicating a significant decrease of the Coulombic interactions affecting energetics of vaporization.
- Subjects
IONIC liquids; CHAIN length (Chemistry); HEATS of vaporization; THERMODYNAMICS; IMIDAZOLES
- Publication
Zeitschrift für Anorganische und Allgemeine Chemie, 2017, Vol 643, Issue 1, p81
- ISSN
0044-2313
- Publication type
Article
- DOI
10.1002/zaac.201600332