Your browser doesn't support javascript.
loading
Dynamics of the OH stretching mode in crystalline Ba(ClO4)2·3H2O.
Hutzler, Daniel; Brunner, Christian; Petkov, Petko St; Heine, Thomas; Fischer, Sighart F; Riedle, Eberhard; Kienberger, Reinhard; Iglev, Hristo.
Afiliação
  • Hutzler D; Physik-Department, Technische Universität München, James-Franck-Strasse, D-85748 Garching, Germany.
  • Brunner C; Physik-Department, Technische Universität München, James-Franck-Strasse, D-85748 Garching, Germany.
  • Petkov PS; Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstraße 2, D-04103 Leipzig, Germany.
  • Heine T; Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstraße 2, D-04103 Leipzig, Germany.
  • Fischer SF; Physik-Department, Technische Universität München, James-Franck-Strasse, D-85748 Garching, Germany.
  • Riedle E; Lehrstuhl für BioMolekulare Optik, Ludwig-Maximilians-Universität München, Oettingenstraße 67, D-80538 München, Germany.
  • Kienberger R; Physik-Department, Technische Universität München, James-Franck-Strasse, D-85748 Garching, Germany.
  • Iglev H; Physik-Department, Technische Universität München, James-Franck-Strasse, D-85748 Garching, Germany.
J Chem Phys ; 148(5): 054307, 2018 Feb 07.
Article em En | MEDLINE | ID: mdl-29421900
The vibrational dynamics of the OH stretching mode in Ba(ClO4)2 trihydrate are investigated by means of femtosecond infrared spectroscopy. The sample offers plane cyclic water trimers in the solid phase that feature virtually no hydrogen bond interaction between the water molecules. Selective excitation of the symmetric and asymmetric stretching leads to fast population redistribution, while simultaneous excitation yields quantum beats, which are monitored via a combination tone that dominates the overtone spectrum. The combination of steady-state and time-resolved spectroscopy with quantum chemical simulations and general theoretical considerations gives indication of various aspects of symmetry breakage. The system shows a joint population lifetime of 8 ps and a long-lived coherence between symmetric and asymmetric stretching, which decays with a time constant of 0.6 ps.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2018 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2018 Tipo de documento: Article