Abstract

In a solid or rare-gas matrix, a spherical molecule can rotate fairly freely in some cases. There is a variation in both strength and symmetry of the hindrance potential, according to the type of molecular and lattice symmetry. The tetrahedral molecule has been investigated so far in detail by many kinds of experiment, including neutron scattering. However, an octahedral molecule like AX 6 has been studied in detail neither by experiment nor theoretically. In order to clarify the difference in the symmetry, we evaluate the rotational potential in the case of SF 6, molecule in a tetrahedral cage.

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