Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9589380 | Journal of Molecular Spectroscopy | 2005 | 12 Pages |
Abstract
Four new electronic transitions of NiF, recorded by high-resolution Fourier transform spectroscopy, have been located in the near infrared spectral region. The three new upper electronic states are labeled as [12.5]2Î5/2, [9.9]Ω = 1/2 and [6.3]2Î 3/2. In addition, the first excited state located at 251 cmâ1 above the ground X2Î 1/2 state has been revisited on the basis of the work carried out by Kopp and Hougen [Can. J. Phys. 45 (1967) 2581-2596], who showed that an Ω = 1/2 state can be described either as a 2Σ state or a 2Î 1/2 state. For NiF, both descriptions of this state have large fine-structure constants with γ = â0.9599 cmâ1 for a 2Σ description and p = â0.7399 cmâ1 for a 2Î 1/2 description consist with a state of mixed character. If this low-lying state is considered to be a [0.25]2Î 1/2 state rather than a [0.25]2Σ state (as proposed up to now), then the experimental pattern of the low-lying electronic states of NiF is similar to those of the related molecules NiH and NiCl.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
M. Benomier, A. van Groenendael, B. Pinchemel, T. Hirao, P.F. Bernath,