Thermodynamic Characteristics of the Dissolution of Fullerene C₆₀ in Benzene, Toluene, o-Xylene, o-Dichlorobenzene, and Carbon Disulfide at Different Temperatures

The enthalpy of the fullerene C₆₀ dissolution in carbon disulfide CS₂ at 298.15 K was measured in a calorimeter with an isothermal shell. The value of the standard enthalpy of the fullerene C₆₀ dissolution in this substance was found. Standard thermodynamic functions of fullerene C₆₀ dissolution in benzene, chlorobenzene, bromobenzene, carbon disulfide, toluene, o-xylene, and o-dichlorobenzene at 298.15 K were determined based on the results of thermometric measurements and theoretical data. The standard thermodynamic functions have also been determined for toluene, o-xylene, and o-dichlorobenzene at temperatures of 288.15 and 308.15 K. The possible causes of the abnormal temperature dependence of the fullerene C₆₀ solubility in some solvents, as well as sign changes in their dissolution enthalpies, in the temperature range of 288.15--308.15 K have been discussed

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