A study of the first ionization potential of the CrO(X5Π) molecule with high-temperature photoelectron spectroscopy
- 1 January 1983
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
- Vol. 79 (7) , 1083-1088
- https://doi.org/10.1039/f29837901083
Abstract
The first band in the He I photoelectron spectrum of the CrO(X5Π) molecule, obtained via the gas-phase reaction Cr + O3, has been recorded. The adiabatic and vertical ionization potentials of the observed band were measured as 7.85 ± 0.02 and 8.16 ± 0.01 eV, respectively. Analysis of the observed vibrational structure yielded text-decoration:overlinew e= 640 ± 30 cm–1 and Franck–Condon analysis of the vibrational envelope gave re= 1.79 ± 0.01 Å for the ground electronic state of the ion, which is predicted on the basis of ab initio configuration-interaction calculations to be a 4σ– state.Keywords
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