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The intermolecular potential for solid fullerene is calculated within the Gordon-Kim statistical approach. The isotropic part of the potential agrees semi-quantitatively with experimental data. For the orientationally ordered Pa phase, two energy minima are predicted at setting angles of 23° and 87°, close to those experimentally found. The electrostatic interaction is shown to be significantly affected by overlap effects at intermolecular separations typical of the solid phases.
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G. C. La Rocca (1994) studied this question.
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