Solvent-induced H/D isotope effect on Xe-129 chemical shiftsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:An effect of substitution of deuterium for protium in molecules of 17 solvents on Xe-129 NMR shifts was studied. The variation range of solvent-induced isotope xenon shifts delta(s)(i) exceeds 5 ppm and lies in the range from - 1.18 ppm (in CH3OD solution) to 3.92 ppm (in D2O) at 28 degrees C. Experimental results agree with the concept that interaction of xenon atoms with solvent molecules is determined predominantly by dispersion forces. Correlations of delta(s)(i) with the isotope effect on polarizability, boiling point, and vapor pressure of solvents were established. Anomalous manifestation of properties of aqueous solution was detected.