EXCITON STRUCTURE IN MOLECULAR CRYSTALS.
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Publisher:Ohio State University
The concept of interchange symmetry and interchange splittings is introduced and related to the concepts of factor group and site group symmetries and splittings. The latter two are sharpened and redefined. All the splittings, together with ``site group shift'' and ``translation group shift'' are related to measurable quantities. The usefulness of the theory will be demonstrated by its application to the electronic and vibrational exciton structure of benzene, where previous symmetry misassignments are corrected. Here, all four zero wave vector components, including the optically inactive one, can be determined from the experimental results.
Author Institution: Department of Chemistry, California Institute of Technology
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