X-ray and Neutron Diffraction Studies of Rb{sub 4}LiH{sub 3}(XO{sub 4}){sub 4} (X = S, Se) Single Crystals
- Chemistry Faculty, Moscow State University, Vorob'evy gory, Moscow, 119489 (Russian Federation)
- Institute Laue-Langevin, Grenoble (France)
Rb{sub 4}LiH{sub 3}(SeO{sub 4}){sub 4} single crystals (1) are studied by the X-ray diffraction method at 180 K and Rb{sub 4}LiH{sub 3}(SO{sub 4}){sub 4} single crystals (2a-2c) are studied by the neutron diffraction method at 298 K (2a and 2b) and 480 K (2c). It is established that isostructural single crystals 1 and 2 (sp. gr. P4{sub 1}) have analogous systems of hydrogen bonds: chains of four XO{sub 4} tetrahedra linked by three H bonds with the central bond (2.49 A) being somewhat shorter than the terminal ones (2.52-2.54 A). In the high-temperature 2c phase, the amplitudes of atomic thermal vibrations and the degree of proton disorder in the central hydrogen bond have somewhat elevated values.
- OSTI ID:
- 20666224
- Journal Information:
- Crystallography Reports, Vol. 49, Issue 6; Other Information: Translated from Kristallografiya, ISSN 0023-4761, 49, 1066-1072 (No. 6, 2004); DOI: 10.1134/1.1828141; (c) 2004 MAIK ''Nauka / Interperiodica''; Country of input: International Atomic Energy Agency (IAEA); TN:; ISSN 1063-7745
- Country of Publication:
- United States
- Language:
- English
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