Thermodynamic properties of fullerenes and their derivatives

The available calorimetric results on the heat capacity and the thermodynam ic characteristics of the phase transitions for fullerenes C-60, C-70, and their mixtures; polymeric forms of fullerene C-60 (1D and 2D C-60 polymers) ; hydrofullerene C60H36; fluorofullerenes C60F36, C60F46, and C60F48; molec ular complexes of C60 with carbon tetrachloride and with cyclohexane; and m olecular complexes of C70 With toluene were examined. A possible reason for discrepancies between the thermodynamic characteristics of the phase trans itions in various samples of fullerenes was established. The validity of th e various theories of heat capacity (the Tarasov theory and Debye theory an d its fractal version) for describing the heat capacity of fullerenes at lo w temperatures was examined. The thermodynamic functions C-p(O) (T), H-O(T) - H-O(0), S-O(T) - S-O(0), and G(O)(T) - H-O(0) are presented.