Synthesis and characterization of nitrophenyl C_(60) derivatives

摘要

Studies on fullerenes have been made extensively since the method of macroscopic synthesis of fullerenes was proposed in 1990, and synthesis and structure of organic derivatives of buckminsterfullerene continue to attract interest of broad scientificcommunity. The chemical reactivity of buckminsterfullerene (C_(60)) is an area of vigorous investigation. It has been suggested that C_(60) acts like a closed-cage alkene rather than an aromatic molecule due to its poor electron-delocalization. For example, C_(60) undergoes reactions associated with the electron-deficient alkenes, Such reactions include various addition reactions, and the additions can be categorized into additions of halogens, Diels-Alder cycloaddition, nucleophilic addition, radical addition, and dipole addition. Addition of azides to C_(60) also provides an excellent method for the preparation of azafullerene derivatives. For example, by using alkyl azides, the 5, 6-azamethanoannulene was formed; by using an azidoformate derivativeand perfluorophenyl azides, the 6,6 azamethanofullerenes were produced.