Raman Spectra of Ices Ih, Ic, II, III, and V

Abstract

The Raman spectra at 77°K of Ices Ih, Ic, II, III, and V made from H2O and D2O have been obtained. The spectra in the O–H and O—D stretching region were obtained both photographically and photoelectrically using Hg 4358 Å as the exciting radiation, and the low-frequency spectra were obtained photographically using Hg 2537 Å as the exciting radiation. In the O–H stretching region, the spectra of ices Ih and Ic are identical, and the spectra of Ices II, III, and V are similar except that the frequencies are higher than in Ice I. Ices II, III, and V appear to be essentially fully hydrogen bonded, as was concluded from the infrared spectra. In the low-frequency spectrum there is one band or sometimes two bands in all the Ices, and they are probably due to translational vibrations of the molecules.