ABSTRACT

Density and sound velocity of the solutions of ionic liquids based on N-alkyl-N-methyl- morpholinium cations: N-ethyl-N-methylmorpholinium bis(trifluoromethanesulfonyl)imide, N-butyl-Nmethylmorpholinium bis(trifluoromethanesulfonyl)imide, N-octyl-N-methyl -morpholinium bis(trifluor omethanesulfonyl)imide and N-decyl-N-methylmorpholinium bis(trifluoromethanesulfonyl)imide in N, N-dimethylformamide and N,N-dimethylacetamide were measured at T = (298.15 318.15) K and at atmospheric pressure. Using experimental data, apparent molar volume and apparent molar compressibility values were calculated and fitted to the Redlich-Meyer type equation which was used to obtain partial molar volume and partial molar isentropic compressibility of the ILs at infinite dilution. By using the density data, the isobaric thermal expansibility coefficients were also estimated. The effect of alkyl chain length of the ILs, experimental temperature and properties of solvent on these thermodynamic properties were discussed.

Compounds

#	Formula	Name
1	C3H7NO	dimethylformamide
2	C4H9NO	N,N-dimethylethanamide
3	C9H16F6N2O5S2	N-ethyl-N-methylmorpholinium bis(trifluoromethanesulfonyl)imide
4	C11H20F6N2O5S2	N-butyl-N-methylmorpholinium bis(trifluoromethanesulfonyl)imide
5	C15H28F6N2O5S2	N-methyl-N-octylmorpholinium bis(trifluoromethanesulfonyl)imide
6	C17H32F6N2O5S2	N-decyl-N-methylmorpholinium bis(trifluoromethanesulfonyl)-imide

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	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	5
POMD	1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	5
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	5
POMD	2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	5
POMD	3 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	55
POMD	3 1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	55
POMD	4 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	55
POMD	4 1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	55
POMD	5 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	55
POMD	5 1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	55
POMD	6 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 6; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	55
POMD	6 1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 6; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	55
POMD	3 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	55
POMD	3 2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	55
POMD	4 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	55
POMD	4 2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	55
POMD	5 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	55
POMD	5 2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	55
POMD	6 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 6; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	55
POMD	6 2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 6; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	55

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Solvation of ionic liquids based on N-methyl-N-alkylmorpholinium cations in N,N-dimethylformamide and N,N-dimethylacetamide - Volumetric and compressibility studies

Marcinkowski, Lukasz, Kloskowski, Adam, Warminska, Dorota

ABSTRACT