Journal article
Relaxation and anharmonic couplings of the O-H stretching vibration of asymmetric strongly hydrogen-bonded complexes
The Journal of chemical physics, Vol.127(4), pp.044501-044501
07/28/2007
DOI: 10.1063/1.2753840
PMID: 17672701
Abstract
We present infrared transient grating measurements of complexes of formic acid with pyridine and pyrazine at four excitation frequencies within the broad proton-stretching band. These experiments investigate the mechanism of the line broadening of the O-H stretching vibration. The transients show coherent oscillations that decay within a few hundred femtoseconds and population relaxation on two time scales. We fit the data using a simple model of three coupled oscillators that relax via sequential kinetics through an intermediate state. Based on this model, we conclude that the coherent oscillations result from superpositions of Fermi-resonance-coupled states involving formic acid overtone and combination states.
Details
- Title: Subtitle
- Relaxation and anharmonic couplings of the O-H stretching vibration of asymmetric strongly hydrogen-bonded complexes
- Creators
- Kenan Gündoğdu - Chemistry Department, The University of Iowa, Iowa City, Iowa 52242, USAJigar BandariaMichael NydeggerWilliam RockChristopher M Cheatum
- Resource Type
- Journal article
- Publication Details
- The Journal of chemical physics, Vol.127(4), pp.044501-044501
- DOI
- 10.1063/1.2753840
- PMID
- 17672701
- ISSN
- 0021-9606
- eISSN
- 1089-7690
- Language
- English
- Date published
- 07/28/2007
- Academic Unit
- Liberal Arts and Science Admin; Chemistry
- Record Identifier
- 9984216684702771
Metrics
6 Record Views