Structures, Electronic Properties, Spectroscopies, and Hexagonal Monolayer Phase of a Family of Unconventional Fullerenes C 64 X 4 （X =H, F, Cl, Br)
Qing-Bo Yan, Qing-Rong Zheng, and Gang Su*
J. Phys. Chem. C,111 (2007), 549-554
