Abstract
Raman spectra of several alicyclic amines in the regions 3000-2500 cm −1 and 1500-1000 cm −1 have been obtained. The appearance of additional bands below 2800 cm −1, in these compounds (Bohlmann bands), is ascribed to the combined effects of weakened CH bonds trans to a nitrogen lone pair and of Fermi resonance. A reassignment for trimethylamine is proposed.
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