Infrared spectra of FHF − in alkali halides

The bifluoride ion, FHF −, has been substitutionally isolated within single crystal samples of several different alkali halides. Infrared spectra of these crystals have been studied for sample temperatures down to 8K when half-bandwidths of less than 1 cm −1 have been observed. (Note that at room te...

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Bibliographic Details
Published in:Journal of molecular structure 1982-01, Vol.80, p.121-124
Main Authors: Chunnilall, C.J., Sherman, W.F.
Format: Article
Language:English
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Summary:The bifluoride ion, FHF −, has been substitutionally isolated within single crystal samples of several different alkali halides. Infrared spectra of these crystals have been studied for sample temperatures down to 8K when half-bandwidths of less than 1 cm −1 have been observed. (Note that at room temperature ν 3 is observed to have a half-bandwidth of about 40 cm −1). The frequency shifts and half-bandwidth changes caused by cooling are considered together with the frequency shifts caused by pressures up to 10 k bar. The low temperature spectra clearly indicate that FHF − is a linear symmetrical ion when substitutionally isolated within alkali halides of either the NaCl or CsCl structure.
ISSN:0022-2860
1872-8014
DOI:10.1016/0022-2860(82)87217-7