Abstract
Spectroscopy has long been recognized as a most valuable technique which yields considerable chemical information concerning both solutes and solvents. It is therefore not surprising that molten salts have been examined by every branch of spectroscopy. Not every spectroscopic technique is readily applied to molten salts and thus some approaches have received less attention than others. This is largely due to practical difficulties. For example, spectrophotometers suited to high-temperature measurements are but rarely offered by manufacturers and, in consequence, researchers who have persisted in this field often have had to devise and manufacture specialized attachments or modifications for their instruments. Sometimes the basic apparatus is not suited to high-temperature studies: the space between the pole pieces of a standard nuclear magnetic resonance spectrometer is certainly not large enough generally for a high-temperature furnace to be located around the sample. However, W.W. Warren Jr. and his co-workers at the Bell Telephone Laboratories are recording spectra successfully up to 1000°C, albeit with a specialized spectrometer. Electron spin resonance fused salt data are almost nonexistent, though Swanson1 has reported esr studies on MnC12 in LiC1—KCI eutectic, and Kukk2 has described some preliminary work on transition metal halides in fused halide solvents. The esr technique will not be discussed further here.
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Griffiths, T.R. (1984). Molten Salt Spectroscopy. In: Gale, R.J., Lovering, D.G. (eds) Molten Salt Techniques. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-7502-3_4
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DOI: https://doi.org/10.1007/978-1-4615-7502-3_4
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