Abstract
Optical spectra of MF−GdF3 (M = Li, Na, K, and Cs) and NaF−CsF−GdF3 molten systems are presented. On the basis of spectral data, it has been determined that stable complex groups \(\rm{GdF}_{6}^{3-}\) are formed in these melts. In the molten LiF−GdF3 system, the \(\rm{GdF}_{4}^-\) group, which decomposes over time, is found along with the \(\rm{GdF}_{6}^{3-}\) complex group. It has been suggested that the number of cations in the second coordination sphere of the \(\rm{GdF}_{6}^{3-}\) groups decreases from 14 to 13 when passing from the melts of LiF, NaF to KF, CsF.
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Russian Text © The Author(s), 2019, published in Zhurnal Neorganicheskoi Khimii, 2019, Vol. 64, No. 6, pp. 643–645.
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Khokhryakov, A.A., Paivin, A.S. & Samoilova, M.A. Optical Spectra of Gadolinium(III) Ions in Melts of Alkali Metal Fluorides. Russ. J. Inorg. Chem. 64, 798–800 (2019). https://doi.org/10.1134/S0036023619050103
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DOI: https://doi.org/10.1134/S0036023619050103