Comparative analysis of the v(OD) and 2v 3(H2O) spectral bands of H2O-D2O system under isobaric heating conditions

The results of an investigation of the influence of isobaric heating on distribution of hydrogen bonds in the H₂O-D₂O system on the basis of comparative complex analysis of the v(OD) and 2v ₃(H₂O) spectral bands are presented. In the case of analysis of the band assigned to the 2v ₃(H₂O) overtone, the possibilities of obtaining more detailed information on the influence of external factors on the formation of local water structure widen significantly. In particular, there are noticeable differences in the quality of the obtainable data for these bands, which are especially manifested in their low-frequency regions, which are determined by the presence of strong hydrogen bonds characteristic of H-bonded high order water n-mers.