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Journal of Solution Chemistry

, Volume 47, Issue 5, pp 892–905 | Cite as

Imidazolium-Based Ionic Liquids Containing the Trifluoroacetate Anion: Thermodynamic Study

  • Dzmitry H. Zaitsau
  • Sergey P. Verevkin
Article
  • 85 Downloads

Abstract

New experimental vapor pressures and vaporization enthalpies of the ionic liquids \( [ {\text{C}}_{2} {\text{mim][CF}}_{3} {\text{CO}}_{2} ] \) and \( [ {\text{C}}_{4} {\text{mim][CF}}_{3} {\text{CO}}_{2} ] \) have been measured by the QCM method. The solution enthalpies of these ionic liquids were measured by using high-precision solution calorimetry and were used for calculation the aqueous enthalpy of formation \( \Delta_{\text{f}} H_{\text{m}}^{ \circ } ({\text{CF}}_{ 3} {\text{CO}}_{2}^{ - } ,_{{}} {\text{aq}}) \) of the anion for combination with quantum-chemical results. The solubility parameters of the ILs under study have been derived from experimental \( \Delta_{\text{l}}^{\text{g}} H_{\text{m}}^{ \circ } \)(298.15 K) values and were used for estimation of miscibility of some common solutes with \( [ {\text{C}}_{n} {\text{mim][CF}}_{3} {\text{CO}}_{2} ] \).

Keywords

Ionic liquid Enthalpy of vaporization Enthalpy of solution Vapor pressure Enthalpy of formation 

Notes

Acknowledgement

This work has been supported by the German Science Foundation (DFG) in the framework of the priority program SPP 1807 “Control of London Dispersion Interactions in Molecular Chemistry”, as well as of the priority program SPP 1708 “Material Synthesis Near Room Temperature”. This work has been also partly supported by the Russian Government Program of Competitive Growth of Kazan Federal University and Russian Foundation for Basic Research No. 15-03-07475. We gratefully acknowledge the contribution of Dr. Vladimir N. Emel´yanenko for quantum-chemical calculations. We also gratefully acknowledge the contribution of Dr. Andrei V. Yermalayeu for the solution calorimetry measurements.

Supplementary material

10953_2018_760_MOESM1_ESM.docx (145 kb)
Supplementary material 1 (DOCX 145 kb)

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Copyright information

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Authors and Affiliations

  1. 1.Department of Physical Chemistry and Department of “Science and Technology of Life, Light and Matter”University of RostockRostockGermany
  2. 2.Department of Physical ChemistryKazan Federal UniversityKazanRussia

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