The atomic structures of crystal hydrates were determined at 173 and 293 K for NaKSbF5.1.5H(2)O (I) and at 293 K for NaRbSbF5 .1.5H(2)O (II). Crystals I and II are isostructural, space group P2(1)/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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College of Materials Engineering, Fujian Agriculture and Forestry University
Ocean College, MinjiangCollege of Materials Engineering, Fujian Agriculture and Forestry University
Shichang SUN
Yifan JIANG
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College of Materials Engineering, Fujian Agriculture and Forestry UniversityCollege of Materials Engineering, Fujian Agriculture and Forestry University
Yifan JIANG
Wei XIAO
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College of Materials Engineering, Fujian Agriculture and Forestry UniversityCollege of Materials Engineering, Fujian Agriculture and Forestry University
Wei XIAO
Weiming ZHOU
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College of Materials Engineering, Fujian Agriculture and Forestry UniversityCollege of Materials Engineering, Fujian Agriculture and Forestry University
Weiming ZHOU
Liwei WANG
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Ocean College, MinjiangCollege of Materials Engineering, Fujian Agriculture and Forestry University
Liwei WANG
Zhanhui YUAN
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College of Materials Engineering, Fujian Agriculture and Forestry UniversityCollege of Materials Engineering, Fujian Agriculture and Forestry University