Add time:08/11/2019         Source:sciencedirect.com

A dispersive Fourier transform far-infrared spectrometer is used to measure the optical constants (absorption and refractive index) of a number of aliphatic ketones, in the wave number range 20–500 cm−1. Several previously unreported absorption features of aliphatic ketones at far-infrared frequencies above the Poley region are found. Frequencies of some of the bands are shown to coincide with those calculated and observed by Raman spectroscopy, but others are being discovered for the first time. It is shown that intermolecular interactions play a significant role in determining the spectral profile in this wave number range.

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