Physical properties of ionic liquids consisting of the 1-butyl-3- methylimidazolium cation with various anions and the bis(trifluoromethylsulfonyl)imide anion with various cations

Hui Jin, Bernie O'Hare, Jing Dong, Sergei Arzhantsev, Gary A. Baker, James F. Wishart, Alan J. Benesi, Mark Maroncelli

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Abstract

Physical properties of 4 room-temperature ionic liquids consisting of the l-butyl-3-methylimidazolium cation with various perfluorinated anions and the bis(trifluoromethylsulfonyl)imide (Tf2N-) anion with 12 pyrrolidinium-, ammonium-, and hydroxyl-containing cations are reported. Electronic structure methods are used to calculate properties related to the size, shape, and dipole moment of individual ions. Experimental measurements of phase-transition temperatures, densities, refractive indices, surface tensions, solvatochromic polarities based on absorption of Nile Red, 19F chemical shifts of the Tf2N- anion, temperature-dependent viscosities, conductivities, and cation diffusion coefficients are reported. Correlations among the measured quantities as well as the use of surface tension and molar volume for estimating Hildebrand solubility parameters of ionic liquids are also discussed.

Original languageEnglish (US)
Pages (from-to)81-92
Number of pages12
JournalJournal of Physical Chemistry B
Volume112
Issue number1
DOIs
StatePublished - Jan 10 2008

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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