Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Thermochemical behavior of crown ethers in the mixtures of water with organic solvents. Part VIII. Hydrophobic hydration and preferential solvation of 1,4-dioxane in {(1 - x)amide + xH2O} at T = 298.15 K

Jozwiak, M.[Malgorzata]
J. Chem. Thermodyn. 2007, 39, 3, 433-437
ABSTRACT
The enthalpies of solution of 1,4-dioxane in {(1 x)F + xH2O}, {(1 x)NMF + xH2O}, and {(1 x)DMF + xH2O} have been measured within the whole mole fraction range at T = 298.15 K. Based on the obtained data, the effect of substituting methyl groups at the nitrogen atom in formamide on the preferential solvation of 1,4-dioxane has been analyzed. A simple model has been proposed to describe the influence of structural and energetic properties of the mixed solvent on the energetic effect of hydrophobic hydration and preferential solvation of 1,4-dioxane by the components of the examined mixture.
Compounds
# Formula Name
1 C4H8O2 1,4-dioxane
2 CH3NO formamide
3 C2H5NO N-methylformamide
4 C3H7NO dimethylformamide
5 H2O water
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
  • 3
  • 1
  • 5
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Mole fraction - 5; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • ISOPERIBOL:UFactor:4
  • 15
  • POMD
  • 2
  • 1
  • 5
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Mole fraction - 5; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • ISOPERIBOL:UFactor:4
  • 15
  • POMD
  • 4
  • 1
  • 5
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Mole fraction - 5; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • ISOPERIBOL:UFactor:6
  • 15