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Intramolecular dynamics of van der Waals molecules: An extended infrared study of ArHF.
- Source :
-
Journal of Chemical Physics . 9/1/1989, Vol. 91 Issue 5, p2790. 18p. - Publication Year :
- 1989
-
Abstract
- The near-infrared spectrum of ArHF prepared in a slit supersonic expansion is recorded with a difference frequency infrared laser spectrometer. By virtue of the high sensitivity of the technique, and the lack of appreciable spectral congestion at the 10 K jet temperature, we observe 9 of the 11 vibrational states with energies below the Ar+HF(v=1, j=0) dissociation limit. These include (1000), the lowest bound HF (v=1) state, the singly, doubly, and quadruply van der Waals stretch excited states (1001) (1002), and (1004), both the Σ bend (1200) and Π bend (111e,f 0), and the multiply excited, Π bend plus van der Waals stretch (111e,f 1). Two Ar+HF(v=0) states, (0000) and (0001), are also characterized. This spectroscopic information is quite sensitive to the Ar+HF potential energy surface away from the equilibrium configuration, and thus provides a rigorous test of trial potential energy surfaces. Excellent agreement is obtained between experiment and the predictions of a recently reported Ar+HF(v=1) potential. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MOLECULAR dynamics
*QUASIMOLECULES
*NOBLE gases
*HYDROGEN
*HALIDES
Subjects
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 91
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 7648311
- Full Text :
- https://doi.org/10.1063/1.456948