کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1238870 968960 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pressure response of Raman spectra of water and its implication to the change in hydrogen bond interaction
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Pressure response of Raman spectra of water and its implication to the change in hydrogen bond interaction
چکیده انگلیسی

In situ Raman spectroscopic measurements of water in the region of OH vibration were conducted up to 0.4 GPa at 23 and 52 °C. The frequencies of the decomposed OH stretching bands initially decreased with increasing pressure, reached a minimum at 0.15 GPa and increased up to 0.3 GPa and then decreased, which corresponds to the variations of the strength of hydrogen bonding. This variation was observed at 23 °C, but not at 52 °C, which suggests a change in pressure dependence on the hydrogen bond interaction between these two temperatures. Based on the equilibration model between hydrogen-bonded and nonhydrogen-bonded molecules, the present experimental results indicate that the pressure variation of the viscosity depends on the ratio of hydrogen-bonded molecules, rather than the strength of hydrogen bonding between molecules.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 61, Issue 10, August 2005, Pages 2423–2427
نویسندگان
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