Abstract
The atomic structures of crystal hydrates were determined at 173 and 293 K for NaKSbF5·1.5H2O (I) and at 293 K for NaRbSbF5·1.5H2O (II). Crystals I and II are isostructural, space group \(P2_1 /{\kern 1pt} m\). The dynamics of water molecules and complex ions was investigated by NMR in the range 170-440 K. The existence of a phase transition of order–disorder type in compounds I and II was established. A mechanism leading to the diffusion motion of fluoride ions in II is suggested, and dehydration of the compounds is considered.
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Gerasimenko, A.V., Kavun, V.Y., Sergienko, V.I. et al. Crystal Structure and Dynamics of Water Molecules and Fluoride Ions in NaKSbF5·1.5H2O and NaRbSbF5·1.5H2O. Journal of Structural Chemistry 43, 436–444 (2002). https://doi.org/10.1023/A:1020385015515
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DOI: https://doi.org/10.1023/A:1020385015515