Thermodynamics Research Center / ThermoML | Thermochimica Acta

Enthalpies of Solution of Glycilglycine in Water-Organic Solvent Media at 298.15 K

Smirnov, V. I., Badelin, V. G.
Thermochim. Acta 2010, 501, 1-2, 55-58
ABSTRACT
The enthalpies of solution of glycilglycine in aqueous solution of 1,4-dioxane, acetone, formamide, N-methylformamide and N,N-dimethylformamide, with the co-solvent content up to 0.4 mole fractions, have been measured calorimetrically at T = 298.15 K. The results obtained were used to calculate the standard enthalpies of solution ( ) and transfer ( ) of the glycilglycine from water into the mixtures as well as the enthalpy coefficients of pair-wise interaction hxy of the solute with the organic co-solvents in aqueous media. The hxy values were correlated with the properties of organic solvents using the Kamlet-Taft equation. The effect of the structure properties of the mixed solvent on the specified enthalpy characteristics of glycilclycine is discussed.
Compounds
# Formula Name
1 C4H8N2O3 glycylglycine
2 CH3NO formamide
3 C2H5NO N-methylformamide
4 C3H7NO dimethylformamide
5 C4H8O2 1,4-dioxane
6 C3H6O acetone
7 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
  • 5
  • 1
  • 7
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Molality, mol/kg - 5; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Molality, mol/kg - 1; Liquid
  • Liquid
  • ISOPERIBOL
  • 12
  • POMD
  • 6
  • 1
  • 7
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Molality, mol/kg - 6; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Molality, mol/kg - 1; Liquid
  • Liquid
  • ISOPERIBOL
  • 12
  • POMD
  • 2
  • 1
  • 7
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Molality, mol/kg - 2; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Molality, mol/kg - 1; Liquid
  • Liquid
  • ISOPERIBOL
  • 11
  • POMD
  • 3
  • 1
  • 7
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Molality, mol/kg - 3; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Molality, mol/kg - 1; Liquid
  • Liquid
  • ISOPERIBOL
  • 12
  • POMD
  • 4
  • 1
  • 7
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Molality, mol/kg - 4; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Molality, mol/kg - 1; Liquid
  • Liquid
  • ISOPERIBOL
  • 12