Chloro‐ and Trifluoromethyl Derivatives of Fullerene C 82 , C 82 Cl 14 and C 82 (CF 3 ) 14

High‐temperature chlorination of a HPLC fraction containing fullerene C 82 resulted in the isolation and X‐ray structure elucidation of the first chloro derivative of IPR C 82 , C 82 (3)Cl 14 . High‐temperature trifluoromethylatiion of a higher fullerene mixture followed by HPLC separation allowed the isolation and structural characterization of a new CF 3 derivative, C 82 (3)(CF 3 ) 14 . The addition patterns of C 82 (3)Cl 14 and C 82 (3)(CF 3 ) 12–18 are discussed in terms of the formation of stabilizing substructures on a fullerene cage such as isolated C=C bonds and benzenoid rings.