Aromatic character of typical C60 derivatives

Abstract

The topological resonance energy (TRE) method has revealed that typical derivatives of C₆₀ are moderately aromatic like the parent molecule C₆₀. For most C₆₀ derivatives, polyvalent molecular anions are at least as aromatic as the neutral species, whereas polyvalent molecular cations are much less aromatic in nature. In general, addition and insertion reactions with C₆₀ proceed in such a manner that the reaction products become as aromatic as possible.