Thermodynamics Research Center / ThermoML | International Journal of Thermophysics

Studies on Hydrogen-Bond Interactions in Ternary Mixtures of Polar Solvents by Dielectric Constant Measurements

Sengwa, R. J., Choudhary, S.[Shobhna], Khatri, V.[Vinita]
Int. J. Thermophys. 2011, 32, 10, 2050-2061
ABSTRACT
The static dielectric constant of equimolar mixtures of formamide+N, N-dimethylformamide and formamide+2-aminoethanol mixedwithwater, ethyl alcohol, dimethylsulphoxide, and 1,4-dioxane were measured over the entire composition range at 303.15 K. The concentration-dependent non-linear behavior of the dielectric constant of the ternary mixtures confirms the formation of hydrogen-bond interactions between the mixture constituents. The excess dielectric-constant values of the mixtures were determined and discussed in view of the strength of hydrogen-bond interactions and the nature of dipolar ordering. It is found that in ternary mixtures, water acts as a structure-maker and ethyl alcohol, dimethylsulphoxide, and 1,4-dioxane act as structure-breakers for the equimolar formamide+N,N-dimethylformamide and formamide+2-aminoethanol binary structures.
Compounds
# Formula Name
1 CH3NO formamide
2 C3H7NO dimethylformamide
3 C4H8O2 1,4-dioxane
4 C2H7NO 2-aminoethan-1-ol
5 H2O water
6 C2H6OS dimethyl sulfoxide
7 C2H6O ethanol
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
  • Relative permittivity at various frequencies ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 1
  • POMD
  • 2
  • Relative permittivity at various frequencies ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 1
  • POMD
  • 3
  • Relative permittivity at various frequencies ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 1
  • POMD
  • 4
  • Relative permittivity at various frequencies ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 1
  • POMD
  • 5
  • Relative permittivity at various frequencies ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 1
  • POMD
  • 6
  • Relative permittivity at various frequencies ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • PPCAP:
  • 1
  • POMD
  • 7
  • Relative permittivity at various frequencies ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • PPCAP:
  • 1
  • POMD
  • 2
  • 1
  • Relative permittivity at various frequencies ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 17
  • POMD
  • 1
  • 4
  • Relative permittivity at various frequencies ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 12
  • POMD
  • 2
  • 1
  • 5
  • Relative permittivity at various frequencies ; Liquid
  • Mole fraction - 5; Liquid
  • Mole fraction - 2; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 16
  • POMD
  • 2
  • 1
  • 3
  • Relative permittivity at various frequencies ; Liquid
  • Mole fraction - 3; Liquid
  • Mole fraction - 2; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 16
  • POMD
  • 6
  • 2
  • 1
  • Relative permittivity at various frequencies ; Liquid
  • Mole fraction - 6; Liquid
  • Mole fraction - 2; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 16
  • POMD
  • 7
  • 2
  • 1
  • Relative permittivity at various frequencies ; Liquid
  • Mole fraction - 7; Liquid
  • Mole fraction - 2; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 16
  • POMD
  • 1
  • 4
  • 5
  • Relative permittivity at various frequencies ; Liquid
  • Mole fraction - 5; Liquid
  • Mole fraction - 4; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 16
  • POMD
  • 1
  • 3
  • 4
  • Relative permittivity at various frequencies ; Liquid
  • Mole fraction - 3; Liquid
  • Mole fraction - 4; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 16
  • POMD
  • 6
  • 1
  • 4
  • Relative permittivity at various frequencies ; Liquid
  • Mole fraction - 6; Liquid
  • Mole fraction - 4; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 16
  • POMD
  • 7
  • 1
  • 4
  • Relative permittivity at various frequencies ; Liquid
  • Mole fraction - 7; Liquid
  • Mole fraction - 4; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Parallel plate capacitor
  • 16