volume 60, issue 11, P4400-4405 1974
DOI: 10.1063/1.1680918
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Abstract: The infrared and Raman spectra of polycrystalline samples of Be1 3 , BBr 3 , and BI3 at 80 and 18 K have been recorded. In the intramolecular region, isotopic and crystalline field splittings are observed in substantial agreement with earlier work. In the lattice region, no far-infrared absorption has been found, in accordance with predictions from a group theoretical analysis based on the known structures of these isomorphous crystals. The three observed Raman lattice modes are assigned according to these pr…

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