Enthalpies and entropies of sublimation, vaporization and fusion of nine polyhydric alcohols

Enthalpy of Sublimation in the Study of the Solid State of Organic Compounds. Application to Erythritol and Threitol

“…The value obtained for erythritol is in good agreement with that given by other authors. 8 Such a comparison cannot be made for threitol, since no data are available for this compound. Under the experimental conditions used, the values determined for ∆ vap H match the standard enthalpy of vaporization.…”

“…Two results for ∆ sub H°of erythritol at 298.15 K are given in the literature: 8,16 135 and 157 kJ mol -1 . The value obtained in the present work is close to the first and significantly different from the second one.…”

Enthalpies and entropies of fusion and of sublimation at the temperature 298.15 K of thiourea and sevenN-alkylthioureas

“…Our investigations into the thermodynamic properties of simple organic compounds acting as "models" for interactions in solution have dealt with urea and N -alkylureas, (1)(2)(3)(4)(5) N -alkylamides, (6) polyhydric alcohols, (7) alkane-α,ω-diols, (8)(9)(10) thiourea and Nalkylthioureas, (11)(12)(13)(14) and small peptides. (15)(16)(17) In the present study, the enthalpies of fusion of thiourea and seven of its N -alkyl derivatives were measured to complete the set of phase transition data reported in our earlier papers (see references 11 to 13).…”

Heat capacities, and enthalpies and entropies of fusion of some uncharged small peptides (N-acetylamino acid amides and 2,5-diketopiperazines)

“…Since heat capacities of solutes can be used to derive their partial molar heat capacities at infinite dilution, (7) as well as enthalpies and entropies of sublimation or vaporization at T = 298.15 K from experimental data, (8) we have undertaken their measurement in our laboratories. This study is a part of a series of investigations on the thermodynamic properties of model compounds as pure substances.…”