Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Studies of Physicochemical and Thermodynamic Properties of the Paramagnetic 1-Alkyl-3-methylimidazolium Ionic Liquids (EMIm)2[Co(NCS)4] and (BMIm)2[Co(NCS)4]

Geppert-Rybczynska, M.[Monika], Lehmann, J. K.[Jochen K.], Peppel, T.[Tim], Kockerling, M.[Martin], Heintz, A.[Andreas]
J. Chem. Eng. Data 2010, 55, 12, 5534-5538
ABSTRACT
This paper describes selected thermophysical properties of the newly obtained paramagnetic inky, opaque ionic liquid, 1-butyl-3-methylimidazolium tetraisothiocyanato-cobaltate(II) ((BMIm)2[Co(NCS)4]). Some properties of the homologous ionic liquid (IL), 1-ethyl-3-methylimidazolium tetraisothiocyanato-cobaltate(II) ((EMIm)2[Co(NCS)4]), have been presented earlier and are discussed here together with those for (BMIm)2[(Co(NCS)4]. On the basis of experimental densities, kinematic viscosities, conductivities, and surface tensions, some additional parameters have been determined, i.e., expansivity coefficients and surface thermodynamic properties. The influence of structural variation in the 1-alkyl-3-methylimidazolium cation is also discussed.
Compounds
# Formula Name
1 C20H30CoN8S4 bis(1-butyl-3-methylimidazolium) tetrathiocyanatocobaltate
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Electrical conductivity, S/m ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Alternating current cell with electrodes
  • 10
  • POMD
  • 1
  • Surface tension liquid-gas, N/m ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Air at 1 atmosphere
  • Pendant drop shape
  • 7
  • POMD
  • 1
  • Kinematic viscosity, m2/s ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Capillary tube (Ostwald; Ubbelohde) method
  • 8
  • POMD
  • 1
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 8