mnizatlon b.md of ethyl radical bns been okcrvcd HI 3 photoelectron spectrometer. i'hc adlabdtic and ~rtic,d P's are 8.30 t: 0.02 eV and 8.55 + 0.02 cV, respcctivcly, and tbc beat ot formatIon of CzltIf is calculated to be 217.1 + "r-1 bcal/mol. Our data arc m good agreement with prcv~ou~ results.
Variable temperature photoelectron spectroscopy. The adiabatic ionization potential of the iodine molecule
β Scribed by B.R. Higginson; D.R. Lloyd; P.J. Roberts
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 293 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Vibrational structure is resolved in the fkst two bands in the Ne I photoelectron spectrum of iodine. The ndiabatic IP is established by temperature wriation, and spectroscopic IP fcr both bands are found tc correspond to production of ions with three vibrational quanta. A photoionization %lalue for the fist IP corresponds to ions with two vibrational quanta. Structure is also observed in the correspondtig bands of iodine bromide.
π SIMILAR VOLUMES
The ionization potentials of CF4 have been determined by photoelectron spectroscopy. and comparison made xlth the values obtained by an INDO-MO calculation. The theoretical calculations are also used to identify the various ionization processes observed experimentally.
A numerical experiment which simulates the temperature dependence of the PE spectrum of thioanisole, i.e. a molecule with restricted internal rotation, shows that an analysis in terms of an assumed equilibrium between two "frozen" conformers can lead to substantial systematic errors in their energy
## Abstract The first photoelectron band of difluorocarbene CF~2~, has been studied by threshold photoelectron (TPE) spectroscopy. CF~2~ was prepared by microwave discharge of a flowing mixture of hexafluoropropene, C~3~F~6~, and argon. A vibrationally resolved band was observed in which at least t