The Raman Spectra of Water, Aqueous Solutions and Ice

The Raman spectra of water at different temperatures, of aqueous solutions and of ice have been discussed in detail. Several low frequency shifts such as Δν̃ 150, 445 and the shift at 2170 are easily discernible if ultraviolet excitation is used. The first two of these vary markedly in intensity with temperature changes and are affected by some solutes. All three are present in ice at slightly displaced frequencies. At least some of these frequencies may be ascribed to the intermolecular influences. Whatever may be the mechanism of polymerization or association these results indicate that effectively such a state exists and is a function of environmental conditions.