The HeI excited electron spectrum of phosphine
Autor: | Leif Karlsson, S. H. Al-Shamma, R. Maripuu, Hans Ågren, Ji Ming Rong, Hans Veenhuizen, Ingrid Reineck, Kai Siegbahn, Wu Nian-Zu |
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Rok vydání: | 1983 |
Předmět: | |
Zdroj: | Molecular Physics. 48:1255-1267 |
ISSN: | 1362-3028 0026-8976 |
Popis: | The HeI excited electron spectrum of phosphine (PH3) has been recorded with high resolution. The 2 A 1 band reveals an extensive vibrational progression in the v 2 bending mode with irregular structure at the low binding energy side due to hindered inversion. The existence of a barrier in the PH3 + 2 A 1 ionic state has been confirmed by vibrational energy level and Franck-Condon factor calculations based on CASSCF calculations of the total energy. The equilibrium angle between a P-H bond and the plane of the three hydrogen atoms in this ionic state was determined to be 15·5° and the barrier against inversion to be 160 meV. The adiabatic electron binding energy of this transition ([Xtilde] 2 A 1 ←X 1 A 1) was found to be 9·868±0·005 eV. |
Databáze: | OpenAIRE |
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