Time-resolved observation of the Eigen cation in liquid water

Experimental observation and time relaxation measurement of the hydrated proton Eigen form [H(3)O(+)(H(2)O)(3)] are presented here. Vibrational time-resolved spectroscopy is used with an original method of investigating the proton excess in water. The anharmonicity of the time-resolved spectra is ch...

Full description

Saved in:
Bibliographic Details
Published inThe Journal of chemical physics Vol. 126; no. 3; p. 034511
Main Authors Amir, Wafa, Gallot, Guilhem, Hache, François, Bratos, S, Leicknam, J-C, Vuilleumier, R
Format Journal Article
LanguageEnglish
Published United States 21.01.2007
Subjects
Cations
Chemistry, Physical - methods
Models, Statistical
Molecular Conformation
Normal Distribution
Oxygen - chemistry
Protons
Solvents
Spectrophotometry, Infrared
Spectrum Analysis - methods
Time Factors
Water - chemistry
Online AccessGet more information

Cover

More Information
Summary:Experimental observation and time relaxation measurement of the hydrated proton Eigen form [H(3)O(+)(H(2)O)(3)] are presented here. Vibrational time-resolved spectroscopy is used with an original method of investigating the proton excess in water. The anharmonicity of the time-resolved spectra is characteristic of the Eigen-type proton geometry. Proton relaxation occurs in less than 200 fs. A calculation of the potential energy confirms the experimental result and the Eigen cation lifetime is in good agreement with previous molecular dynamics simulations.
ISSN:0021-9606
DOI:10.1063/1.2428299