Time-resolved observation of the Eigen cation in liquid water
| Autor: | Savo Bratos, François Hache, Guilhem Gallot, Wafa Amir, Jean-Claude Leicknam, Rodolphe Vuilleumier |
|---|---|
| Přispěvatelé: | Laboratoire d'optique et biosciences (LOB), École polytechnique (X)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Physics Department [Golden CO], Colorado School of Mines, Laboratoire de Physique Théorique des Liquides (LPTL), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Roura, Denis |
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
Time Factors
Spectrophotometry Infrared Proton Molecular Conformation Normal Distribution Analytical chemistry General Physics and Astronomy 010402 general chemistry 7. Clean energy 01 natural sciences Molecular physics Spectral line [PHYS.PHYS.PHYS-CHEM-PH] Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph] Molecular dynamics Cations 0103 physical sciences Physical and Theoretical Chemistry Spectroscopy Models Statistical 010304 chemical physics Chemistry Physical Chemistry Spectrum Analysis Anharmonicity Relaxation (NMR) Water Potential energy 0104 chemical sciences Oxygen Molecular vibration Solvents [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph] Protons |
| Zdroj: | Journal of Chemical Physics Journal of Chemical Physics, American Institute of Physics, 2007, 126 (3), pp.34511. ⟨10.1063/1.2428299⟩ Journal of Chemical Physics, 2007, 126 (3), pp.34511. ⟨10.1063/1.2428299⟩ |
| ISSN: | 0021-9606 1089-7690 |
| DOI: | 10.1063/1.2428299⟩ |
| Popis: | International audience; 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. Cop. 2007 American Institute of Physics. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|