Information and thermodynamic entropies of regioisomeric fullerene cycloadducts C₆₀(CH₂)_n (n = 1, 2) and C₇₀CH₂

Abstract

The computations of the thermodynamic and information entropies of regioisomeric mono- and bisadducts of the C60 and C70 fullerenes with cyclopropane addends were performed with the density functional theory method. The regularities between the entropies and symmetry point groups of the molecules are discussed. For isomeric compounds, the calculated thermodynamic and information entropies vary in narrow ranges; the ranges for both entropies are narrower as compared with the ranges observed for these quantities of fullerenes themselves. The information entropy is recommended as a parameter for digital selecting the most and least symmetric structures.