Enthalpies of formation of buckminsterfullerene (C₆₀) and of the parent ions C₆₀⁺, C₆₀²⁺, C₆₀³⁺ and C₆₀^-

The standard enthalpy of formation of buckminsterfullerene (C₆₀) in the crystalline state has been determined as 2278.1 ± 14.4 kJ mol^-1 using a microcombustion calorimeter. Statistical mechanical calculations of the heat capacity of gaseous C₆₀ as a function of the temperature and a critical survey of the literature data for the enthalpy of sublimation, the heat capacity in the crystalline state, the first, second and third ionization energies and the electron affinity of C₆₀, enabled the enthalpy of formation of gaseous C₆₀ and the enthalpies of formation of the ions C₆₀⁺, C₆₀²⁺, C₆₀³⁺ and C₆₀^- to be derived.