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Synthesis and crystal structure of a new uranyl selenite(IV)-selenate(VI), [C5H14N]4[(UO2)3(SeO4)4(HSeO3)(H2O)](H2SeO3)(HSeO4)

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Abstract

Crystals of a new uranyl selenite(IV)-selenate(VI), [C5H14N]4[(UO2)3(SeO4)4(HSeO3)(H2O)]·(H2SeO3)(HSeO4) were obtained by evaporation from aqueous solutions. The compound crystallizes in the triclinic system, space group \(P\bar 1\), a = 11.7068(9), b = 14.8165(12), c = 16.9766(15) Å, α = 73.899(6)°, β = 76.221(7)°, γ = 89.361(6)°, V = 2743.0(4) Å3, Z = 2. The crystal structure was solved by direct methods and refined to R 1 = 0.081 (wR 2 = 0.150) for 6966 reflections with |F hkl | ≥ 4σ(|F hkl |). The structure is based on [(UO2)3(SeO4)4(HSeO3)(H2O)]3− layers formed by joining uranyl pentagonal bipyramids, selenate tetrahedra, and selenite pyramids. The [HSe(VI)O4]− anions, [H2Se(IV)O3] molecules, and protonated methylbutylamine cations are arranged between the layers.

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Authors and Affiliations

  1. St. Petersburg State University, St. Petersburg, Russia

    S. V. Krivovichev

  2. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Moscow, Russia

    I. G. Tananaev & B. F. Myasoedov

  3. Innsbruck University, Innsbruck, Austria

    V. Kahlenberg

Authors
  1. S. V. Krivovichev
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  2. I. G. Tananaev
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  3. V. Kahlenberg
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  4. B. F. Myasoedov
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Original Russian Text © S.V. Krivovichev, I.G. Tananaev, V. Kahlenberg, B.F. Myasoedov, 2006, published in Radiokhimiya, 2006, Vol. 48, No. 3, pp. 197–201.

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Krivovichev, S.V., Tananaev, I.G., Kahlenberg, V. et al. Synthesis and crystal structure of a new uranyl selenite(IV)-selenate(VI), [C5H14N]4[(UO2)3(SeO4)4(HSeO3)(H2O)](H2SeO3)(HSeO4). Radiochemistry 48, 217–222 (2006). https://doi.org/10.1134/S1066362206030027

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  • DOI: https://doi.org/10.1134/S1066362206030027

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