Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 7, Issue 14, Pages 2771-2779Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b504681p
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1- Butyl- 3- methylimidazolium tetrafluoroborate ([ bmim][ BF4]) is one of the promising room- temperature ionic liquids. To test the refined force. field for [ bmim][ BF4] proposed in our previously work ( J. Phys. Chem. B, 2004, 108, 12978 - 12989), thermodynamic properties of mixtures of [ bmim][ BF4] ( 1) + acetonitrile ( 2) are presented by using molecular dynamics over the whole concentration range. The calculated densities are in good agreement with the experimental data with deviations less than 2%, indicating the force. field is applicable to the mixtures. In addition, the diffusion constants, viscosities, heats of vaporization, cohesive energy densities and excess properties of the mixtures are reported. The microscopic structures are discussed in detail, corresponding to the thermodynamic properties.
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