Time-resolved observation of the Eigen cation in liquid water

Wafa Amir; Guilhem Gallot; Fraņois Hache; S. Bratos; J. C. Leicknam; R. Vuilleumier

doi:10.1063/1.2428299

Time-resolved observation of the Eigen cation in liquid water

Wafa Amir
, Guilhem Gallot
, Fraņois Hache
, S. Bratos
, J. C. Leicknam
, R. Vuilleumier

Institut Polytechnique de Paris
Physics Department
Colorado School of Mines
Université Pierre et Marie Curie

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

Experimental observation and time relaxation measurement of the hydrated proton Eigen form [H3 O+ (H2 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.

Original language	English
Article number	034511
Journal	Journal of Chemical Physics
Volume	126
Issue number	3
DOIs	https://doi.org/10.1063/1.2428299
Publication status	Published - 29 Jan 2007

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abstract = "Experimental observation and time relaxation measurement of the hydrated proton Eigen form [H3 O+ (H2 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.",

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AU - Amir, Wafa

AU - Gallot, Guilhem

AU - Hache, Fraņois

AU - Bratos, S.

AU - Leicknam, J. C.

AU - Vuilleumier, R.

PY - 2007/1/29

Y1 - 2007/1/29

N2 - Experimental observation and time relaxation measurement of the hydrated proton Eigen form [H3 O+ (H2 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.

AB - Experimental observation and time relaxation measurement of the hydrated proton Eigen form [H3 O+ (H2 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.

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DO - 10.1063/1.2428299

M3 - Article

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JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

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ER -

Time-resolved observation of the Eigen cation in liquid water

Abstract

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