Absorption and luminescence spectra of [(C2H5)3NH]2UO2Cl4
- 1 January 1979
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
- Vol. 75, 1168-1178
- https://doi.org/10.1039/f29797501168
Abstract
The 20 K electronic absorption spectra, 10 K luminescence spectra and room temperature infrared and Raman spectra of single crystals of the title compound are reported. The luminescence spectrum is analysed into (a) an electronic origin, Eg→A1g(D4h); (b) vibronic origins involving internal UO2Cl2– 4 modes; (c) vibronic origins involving internal cation modes; (d) lattice vibrations; (e) bands originating in 18O substituted anions; (f) progressions in the O—U—O and U—Cl symmetric stretching modes and the O—U—O rocking mode based on the above features. The absorption spectrum between 465 and 500 nm shows four electronic origins with associated vibronic structure. The luminescence of a high temperature modification of the compound is also discussed.Keywords
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