Synthesis and complex investigation of potassium ammonium hexafluorozirconates: I. Synthesis and X-ray diffraction study of K2-x
(NH4)xZrF6 (0 < x < 2) crystals |
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| Authors: | A V Gerasimenko I A Tkachenko V Ya Kavun N A Didenko V I Sergienko |
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| Institution: | (1) Institute of Chemistry, Far East Division, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok, 690022, Russia |
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| Abstract: | The synthesis and X-ray diffraction study of compounds K2-x
(NH4)xZrF6 (0 < x < 2) were carried out. In all crystals of mixed composition, potassium cations are isomorphously replaced by ammonium cations.
The compounds with x < 0.5 are isostructural to K2ZrF6 and those with x > 1.5, to (NH4)2ZrF6. At 0.5 < x < 1.5, the structures are built of linear polymeric chains formed by edge-sharing Zr dodecahedra. The distribution of potassium
and ammonium cations over the cationic positions was considered. |
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