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  • 1 Polish Academy of Sciences Institute of Physical Chemistry Ul. Kasprzaka 44/52 01-224 Warsaw Poland
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Enthalpy of solution, ΔHsolo , enthalpy of sublimation, ΔHsublo , apparent partial molar volume and heat capacities,V2o andCp,2o were determined for aqueous solutions of thirty alkylated derivatives of uracyl and adenine, eight derivatives of cytosine and guanine. Calculated accessible surface areas and molar volumes are presented, too. The values of enthalpy of solution, enthalpy of sublimation can be useful in the studies on the nature of interaction between these compounds and water molecules. Apparent partial molar volume and heat capacity give a new aspect on hydrophob properties of the examined nucleic acid base derivatives.