High-resolution near-infrared spectroscopy of water dimer
- 1 December 1989
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 91 (11), 6613-6631
- https://doi.org/10.1063/1.457380
Abstract
High‐resolution near‐infrared spectra are reported for all of the O–H stretch vibrational bands of the water dimer. The four O–H vibrations are characterized as essentially independent proton‐donor or proton‐acceptor motions. In addition to the rotational and vibrational information contained in these spectra, details are obtained concerning the internal tunneling dynamics in both the ground and excited vibrational states. These results show that for tunneling motions which involve the interchange of the proton donor and acceptor molecules, the associated frequencies decrease substantially due to vibrational excitation. The predissociation lifetimes for the various states of the dimer are determined from linewidth measurements. These results clearly show that the predissociation dynamics is strongly dependent on the tunneling states, as well as the Ka quantum number, indicating that the internal tunneling dynamics plays an important role in determining the dissociation rate in this complex.Keywords
This publication has 39 references indexed in Scilit:
- Microwave electric-resonance optothermal spectroscopy of (H2O)2The Journal of Chemical Physics, 1989
- Measurement of the perpendicular rotation-tunneling spectrum of the water dimer by tunable far infrared laser spectroscopy in a planar supersonic jetThe Journal of Chemical Physics, 1989
- Vibrational exchange upon interconversion tunneling in (HF)2 and (HCCH)2The Journal of Chemical Physics, 1989
- Water dimer tunneling states with K=0The Journal of Chemical Physics, 1988
- Intramolecular vibrations of small water clustersThe Journal of Chemical Physics, 1988
- New measurements of microwave transitions in the water dimerThe Journal of Chemical Physics, 1987
- Vibrational predissociation, tunneling, and rotational saturation in the HF and DF dimersThe Journal of Chemical Physics, 1984
- Rotational structure and vibrational predissociation in the HF stretching bands of the HF dimerThe Journal of Chemical Physics, 1983
- The Infrared Absorption Spectrum of WaterAustralian Journal of Physics, 1982
- Radiofrequency and Microwave Spectrum of the Hydrogen Fluoride Dimer; a Nonrigid MoleculeThe Journal of Chemical Physics, 1972