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  • Title: Hydrogen bond fluctuations of the hydration shell of the bromide anion.
    Author: Timmer RL, Bakker HJ.
    Journal: J Phys Chem A; 2009 May 28; 113(21):6104-10. PubMed ID: 19456178.
    Abstract:
    We study the hydrogen bond dynamics of solutions of LiBr and NaBr in isotopically diluted water (2% HDO:D2O) with femtosecond spectral hole-burning spectroscopy. We study the frequency fluctuations of the O-H stretch vibrations of the HDO molecules and observe spectral dynamics with time constants of 0.8 +/- 0.1 ps and 4.3 +/- 0.3 ps. The slow process we assign to the hydrogen bond fluctuations of the O-H...Br- hydrogen bonds of the hydration shell of the Br- anion. We find that the time scale of the hydrogen bond fluctuations of the hydration shell of Br- is independent of the nature of the cation and the concentration.
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