The Infrared Absorption Spectrum of Water Containing Deuterium

Abstract
Absorption percentages for the region 1–10μ are presented for one sample of water, 60 percent of whose hydrogen is deuterium, and for a second sample containing 99.5 percent deuterium oxide. Maxima are picked out as the three fundamental frequencies for the molecules DOD and HOD. These are compared with values predicted by an isotopic shift calculation based on data chosen from the spectrum of ordinary water. All other higher frequency maxima are interpreted as overtones or combination bands, but only after a fourth fundamental frequency is chosen in the examples of HOH and DOD.

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