Abstract
Raman spectra of a 10M NaOH water solution are reported both in liquid and in amorphous phases. The OH-stretching region of these spectra has been analyzed in detail using a decomposition procedure, and the results are discussed in relation to the available water and glassy water Raman data. It is shown that, while the amorphous phase of this solution has a typical “under-cooled liquid-like” structure, a quite different situation occurs for the glassy phase of pure water. On the basis of a comparative discussion we propose for the amorphous ice a structure which is in good agreement with the available random tetrahedral network models and with the experimental data of Raman scattering. X-rays and neutron diffraction measurements.
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