Local intermolecular correlations in C60.

Abstract

A neutron-powder-diffraction real-space structural refinement method is applied to study the local intermolecular correlations in bulk ${\mathrm{C}}_{60}$ solid at 10 K. We found that the orientation of the ${\mathrm{C}}_{60}$ molecules often deviates locally from the long-range average structure, and a significant number (30--40 %) of molecules have the sixfold face oriented toward adjacent molecules.