Quantitative Electron Crystallographic Determinations of Higher Fullerenes in the Hexagonal Close Packed Polymorph

Abstract

The hexagonal closed packed crystal structures of the higher fullerenes, C76, C78, and C84, have been determined at room temperature in the [001] projection from single crystal electron diffraction intensity data. In all cases, the molecules in the crystal are rotating freely about their centers. As part of the structure analysis, independent determination of average molecular radii (a continuous variable in the structure factor calculation) yields values in reasonable agreement with predicted values for these molecules.