期刊
CHEMICAL PHYSICS LETTERS
卷 433, 期 1-3, 页码 80-85出版社
ELSEVIER
DOI: 10.1016/j.cplett.2006.11.035
关键词
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We study how water OH reorientation dynamics' short and long-time contributions depend on the hydrogen(H) -bond strength. The initial librational reorientation occurs within a cone. We show quantitatively that the stronger the H-bond, the smaller the cone angle and librational reorientation amplitude. The long-time decay is independent of the initial OH center dot center dot center dot O H-bond strength, as explained by our recently proposed molecular jump mechanism for the water reorientation mechanism: in the vast majority of (transient) H-bond breaking events, a new H-bond partner is unavailable and the reorientation is unsuccessful; successful reorientation requires this availability, which is independent of the H-bond strength. (c) 2006 Elsevier B.V. All rights reserved.
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