The principal thermodynamic properties and the temperature dependences of reduced Gibbs energies were estimated using the available data, various suggestions, and calculation methods for real and hypothetical carbon compounds formed by the C-2-C-5 cluster molecules (clusterites) and the C-28, C-32, C-44, C-50, C-56, C-60, C-70, C-76, C-84, C-90, and C-94 fullerene molecules (fullerites).