Correlation of enthalpic and volume characteristics of 15-crown-5 in solution with molecular parameters and physical properties of solvents

Enthalpies of solvation of 1,4,7,10,13,16-hexaoxacyclooctadecane in solvents

“…The comparison of the results of l eff 2 for 18-crown-6 and 15-crown-5 leads to the conclusion that the correlation considered above gives values of dipole moment in agreement with those ascribed to both ethers [3,13] and account for the increment of the molecular polarity with the decrease of the ring size.…”

“…P is the total pressure above solution. The values for the molecular diameters considered for calculating H cav are 0.790 nm for 18-crown-6 [12] and those taken for the solvents were published elsewhere [3]. The estimated values for H int are listed in table 2.…”

“…In a previous work [3] we succeed in establishing a correlation between the solvation enthalpy and the contributions accounting for the cavity formation and the different types of intermolecular interactions. The contributions of solute-solvent interaction were described by using pair potential and radial distribution function worked out for gaseous mixtures.…”

“…In sequence of our studies on solvation of crown ethers [1][2][3], we report in the present work the results obtained for the calorimetric investigation of 1,4,7,10, 13,16-hexaoxacyclooctadecane in organic solvents and water at T ¼ 298:15 K. From the enthalpy of solution, D sol H m , and the enthalpy of sublimation, D sub H m , the enthalpy of solvation (transference of the solute from gas to solution), D solv H m , was determined. Infinite dilution is the reference state for enthalpies of solution and solvation.…”

Effect of base–acid properties of the mixtures of water with methanol on the solution enthalpy of selected cyclic ethers in this mixture at 298.15 K

“…The effects of solvent energetic and structural properties [18][19][20], solvation capabilities [21][22][23][24][25][26][27], and acid-base properties of pure and mixed solvents on chemical changes have been reported [28][29][30][31]. One of the methods in the investigation of the solvation is the study of the enthalpy of dissolution of the solute.…”