The formation of 18crown6 ether (18C6) complexes with D,Lalanine (Ala) in mixed water acetone solvents with 0.0, 0.08, 0.17, 0.22, and 0.30 mole fractions of acetone (T = 298.15 K) was investigated by means of calorimetry. Thermodynamic characteristics of the reaction of the molecular [Ala18C6] complex formation (?rG°, ?rH°, and T?rS°) were calculated on the basis of calorimetric data. Analysis of solvation contributions of reagents into the enthalpy of the [Ala18C6] formation reaction showed that the changes in the reaction energy when the solvent composition is varied are determined by the changes in the solvate state of 18C6.
Thermodynamic characteristics of alanine-18-crown-6 ether complexes in binary water-acetone solvents
Matteoli E
2012
Abstract
The formation of 18crown6 ether (18C6) complexes with D,Lalanine (Ala) in mixed water acetone solvents with 0.0, 0.08, 0.17, 0.22, and 0.30 mole fractions of acetone (T = 298.15 K) was investigated by means of calorimetry. Thermodynamic characteristics of the reaction of the molecular [Ala18C6] complex formation (?rG°, ?rH°, and T?rS°) were calculated on the basis of calorimetric data. Analysis of solvation contributions of reagents into the enthalpy of the [Ala18C6] formation reaction showed that the changes in the reaction energy when the solvent composition is varied are determined by the changes in the solvate state of 18C6.| File | Dimensione | Formato | |
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Descrizione: Thermodynamic Characteristics of Alanine-18-Crown-6 Ether Complexes in Binary Water-Acetone Solvents
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