title: Selective addition of secondary amines to C₆₀: formation of penta- and hexaamino[60]fullerenes.
abstract: Secondary amines are well-known to add to [60]fullerene to form the tetraamino epoxy adduct C60(O)(NR1R2)4 under both photolysis and thermal conditions in the presence of oxygen. We have now found that pentaamino hydroxyl adduct C60(OH)(NR1R2)5 and hexaamino adduct C60(NR1R2)6 can be formed as the major products in the dark in the presence of oxygen. Key steps of the reaction mechanism probably involve repeated oxygen oxidation of the radical ion pair between fullerene and amines.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China.
authors.forename: Yanbang
authors.initials: Y
authors.lastname: Li
authors.forename: Liangbing
authors.initials: L
authors.lastname: Gan