Using Higher Fullerenes to Channel Halogen-Halogen Interactions

Thursday, 28 May 2015: 11:20
Lake Erie (Hilton Chicago)
K. Ghiassi, J. Wescott, S. Y. Chen (University of California, Davis), S. Stevenson (Indiana University-Purdue University Fort Wayne), A. L. Balch (University of California, Davis), and M. M. Olmstead (University of Califronia, Davis)
Fullerenes are fascinating to study in the solid state in regard to their supramolecular and host-guest chemistry. Through the utilization of single-crystal X-ray diffraction, the molecular and supramolecular structures of fullerenes can be determined. Much focus has been given to the host-guest nature of fullerenes in which the complementary molecules are often quite large and resemble the shape of the cage. Little focus, however, has been given to flat, smaller co-crystallization molecules. The molecules 1,2,4,5-tetrabromobenzene and hexabromobenzene were successfully co-crystallized with C60, C70 and Sc3N@Ih(7)-C80 in order to study π-π interactions. While the C60 structures show typical van der Waals interactions, the higher fullerenes show additional, unique halogen-halogen interactions.