Raman spectrum of ice VIII

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Abstract
The Raman spectra of H2O and D2O ice VIII recovered at ∼100 K and zero pressure have been measured in the range 4000–50 cm−1. The three stretching, three rotational, and four translational bands expected from the symmetry of the crystal have been identified. Two bending bands are expected and have been tentatively identified among some weak bands. The relative intensity of the rotational and stretching bands is much smaller than in the vapor, and so if the intensity of the stretching bands is not greatly changed, the anisotropy of the polarizability is appreciably smaller in ice VIII than in the vapor.