Abstract
IT is very satisfactory that evidence for the 2Πi-state of HF+, which proves to be the ground-state, has now been obtained, and the agreement between the electron impact value of the ionization potential to A 2Σ+, 15.77 + 1.2 = 16.97 eV., and the spectroscopic and thermochemical value, 16.88 eV., is very good. Comparison with HCl and HBr suggests that ω e″ and r e″ for HF+ should have values similar to those for the ground-state of the neutral molecule. The relative dispositions of the potential curves (Fig. 1) are such that the transition B–X in the ultra-violet region must be weak: however, it seems likely that the A–X transition should be observable. The 0,0 band should lie at about 11,200 A., and the 1,0 band at about 8500 A.
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JOHNS, J., BARROW, R. Ionization Potentials of Hydrogen Fluoride and the Ground-State of the HF+ Ion. Nature 179, 1186 (1957). https://doi.org/10.1038/1791186b0
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DOI: https://doi.org/10.1038/1791186b0
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