A study of aluminium monofluoride and aluminium trifluoride by high-temperature photoelectron spectroscopy
Abstract
The Hel photoelectron spectrum of gaseous AIF(X 1Σ +) has been recorded and the first three cationic states have been assigned with the aid of PNO/CEPA calculations. The first band shows vibrational structure and analysis of the component separations and relative intensitives leads to values of ω c = 1040 ± 40 cm -1 and rc = 1.59 ± 0.01 Å in the AIF + (X 2Σ +) state; the corresponding theoretical values are 960 cm -1 and 1.60 Å respectively. The first adiabatic ionization potential, 9.73 ± 0.01 eV, allows a determination of the quantum defect, δ, in a number of previously observed Rydberg states of AIF. The Hel photoelectron spectrum of gaseous AIF 3 has also been obtained. It is assigned on the basis of ab initio molecular orbital calculations and comparison with the corresponding BF 3 spectrum.
- Publication:
-
Chemical Physics
- Pub Date:
- August 1984
- DOI:
- 10.1016/0301-0104(84)85286-6
- Bibcode:
- 1984CP.....88..289D