- Conference date: 13-14 January 2004
- Location: Shiga (Japan)
Maximum values of the H‐bond energies and H‐bond pair volumes were determined from the OD‐stretching Raman contour of HDO in water using dispersion curves obtained from the temperature and pressure dependence of the intensities. The maximum H‐bond ΔE value is 5,100 ± 500 cal/mol, and the maximum H‐bond pair ΔV is 1.4 cm3/mol. A minimum in the volume dispersion curve indicates that some H‐bonds are strongly bent as the volume is decreased by pressure rise to ≈ 10 kbar at 28 ° C. Similar effects of H‐bond bending are observed from dispersion curves obtained from NaCl and NaBF4 in water. The main effect on liquid water of isothermal pressure rise to 10 kbar is to form H‐bonds, both linear and bent, thus explaining freezing to ice VI.
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