Thermodynamic properties of three adamantanols in the ideal gas state

The enthalpies of sublimation and the saturated vapor pressure of 1-adamantanol (1-Adol), 2-adamantanol (2-Adol) and 2-methyl-2-adamantanol (2-Me-2-Adol) were measured. Thermodynamic functions of the compounds under study in the ideal gas state between 100 and 1000 K were calculated by the statistical thermodynamic methods. The sets of wave numbers of normal vibrations for adamantanols were obtained by semi empirical calculation (MINDO3 I/I MNDO/d). The experimental entropies for gaseous adamantanols and the calculated values were in the satisfactory agreement. (C) 2003 Published by Elsevier Science B.V.