Raman Spectral Studies of Water Structure

Raman frequencies and polarizations and infrared frequencies of water and heavy water have been obtained, and the intermolecular vibrations of water have been related to a five‐molecule hydrogen‐bonded C2v model consistent with x‐ray data. Observed variations of the integrated Raman intensity of the 175‐cm—1 hydrogen‐bond‐stretching vibration, with variations of temperature, have been interpreted in terms of the five‐molecule model. That interpretation leads to reasonable values for the enthalpy of hydrogen‐bond formation. Effects of electrolyte addition on the intensity of the 175‐cm—1 band are also described.

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