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The Raman and microwave spectra of CF3CD3 are reported and used to obtain a more accurate determination of the potential barrier to internal rotation. The microwave results give a barrier of 3.2±0.2 kcal/mole, however, this is not in accord with the trends for chlorine or bromine substituted ethanes. (AIP)
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Durig et al. (1975) studied this question.
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