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Alkali-metal hydrogen selenate-phosphates M 2 H 3(SeO4)(PO4) (M = Rb or K) and M 4H5(SeO4)3(PO4)(M = K or Na)

  • Structure of Inorganic Compounds
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Abstract

Crystalline hydrogen selenate-phosphates M 2H3(SeO4)(PO4) [M = Rb (I) or K (II)] and M 4H5(SeO4)3(PO4) [M = K (III) or Na (IV)] were obtained by reactions of Rb, K, and Na carbonates with mixtures of selenic and phosphoric acid solutions. The X-ray structure study of single crystals revealed that I and II are isostructural (sp. gr. Pn). In these structures, SeO4 and H3PO4 tetrahedra are linked by hydrogen bonds to form corrugated layers. Structures III and IV (sp. gr. \(P\bar 1\)) have similar arrangements of non-hydrogen atoms but different hydrogen-bond systems. In III = K4(HSeO4)2{H[H(Se,P)O4]2}, the HSeO4 groups branch from the infinite anionic {H[H(Se,P)O4]2} chains. In IV = Na4[H(SeO4)2]{H[H1.5(Se, P)O4]2}, the anionic {H[H1.5(Se,P)O4]2} chains are crosslinked by hydrogen bonds formed by the [H(SeO4)2] dimers.

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Authors and Affiliations

  1. Chemistry Department, Moscow State University, Vorob’evy gory, Moscow, 119899, Russia

    S. I. Troyanov, I. V. Morozov & V. B. Rybakov

  2. Institut für Chemie, Humboldt Universität, Berlin, Germany

    É. Kemnitz

Authors
  1. S. I. Troyanov
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  2. I. V. Morozov
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  3. V. B. Rybakov
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  4. É. Kemnitz
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Translated from Kristallografiya, Vol. 45, No. 3, 2000, pp. 441–447.

Original Russian Text Copyright © 2000 by Troyanov, Morozov, Rybakov, Kemnitz.

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Troyanov, S.I., Morozov, I.V., Rybakov, V.B. et al. Alkali-metal hydrogen selenate-phosphates M 2 H 3(SeO4)(PO4) (M = Rb or K) and M 4H5(SeO4)3(PO4)(M = K or Na). Crystallogr. Rep. 45, 398–404 (2000). https://doi.org/10.1134/1.171206

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