Abstract
The enthalpies of solution of cyclic ethers: 1,4-dioxane, 12-crown-4 (12C4), and 18-crown-6 (18C6) in water―acetone mixtures have been measured within the whole mole fraction range at 298.15 K. Based on the obtained data, the effect of base―acid properties of water― acetone mixtures on the solution enthalpy of cyclic ethers in this mixed solvent has been analyzed. The strong dependence of the enthalpy of solution (solvation) of cyclic ethers on basic properties of mixed solvent has been observed. The effects of carbonyl atom replacement in acetone (ACN) molecule by sulfur atom (DMSO molecule) and base―acid properties of mixed solvent on the solvation process of cyclic ethers have been analyzed.
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