title: Synthesis of stable derivatives of c(62): the first nonclassical fullerene incorporating a four-membered ring.
abstract: A rational synthetic approach to the first four-membered ring-containing derivatives of C(62) is reported. They were synthesized by an inverse electron demand Diels-Alder reaction of 3,6-diaryl-1,2,4,5-tetrazines with C(60) in o-dichlorobenzene, followed by visible light irradiation at reflux. The structure of these nonclassical fullerenes derivatives was determined by X-ray single-crystal diffraction.
authors.affiliation: Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, USA.
authors.forename: Wenyuan
authors.initials: W
authors.lastname: Qian
authors.forename: Shih-Ching
authors.initials: SC
authors.lastname: Chuang
authors.forename: Roberto B
authors.initials: RB
authors.lastname: Amador
authors.forename: Thibaut
authors.initials: T
authors.lastname: Jarrosson
authors.forename: Michael
authors.initials: M
authors.lastname: Sander
authors.forename: Susan
authors.initials: S
authors.lastname: Pieniazek
authors.forename: Saeed I
authors.initials: SI
authors.lastname: Khan
authors.forename: Yves
authors.initials: Y
authors.lastname: Rubin