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Structural Features of Mixed Anions (Мо7 – хWхO24)6– and Their Packing in the [Pd(NH3)4]3(Мо7 – хWxO24)⋅6H2O Crystal Structure

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Abstract—

[Pd(NH3)4]3(Мо7 – хWxO24)⋅6H2O crystals with different Mo/W ratios have been formed as a result of the crystallization of a mixture of Na6W7O24, Na6Мо7O24, and [Pd(NH3)4](NO3)2 aqueous solutions. Ten crystals with 0.8 ≤ x ≤ 3.4 have been studied. In the polyanion, Mo and W atoms occupy preferred sites rather than are distributed statistically. The crystallographic characteristics of [Pd(NH3)4]3(Мо3.6W3.4O24)⋅6H2O are found to be as follows: a = 17.4294(2) Å, b = 28.9215(4) Å, c = 30.4435(4) Å, sp. gr. Ibca, V = 15346.1(3) Å3, and Z = 16. The anion packing in the structure has been analyzed. It is shown that anions are arranged into a pseudohexagonal motif. The products of thermal decomposition in H2 atmosphere have been studied. It is shown that a mixture of solid substitutional solutions based on Pd and Mo(W) lattices is formed at 800°C.

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Authors and Affiliations

  1. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

    A. S. Sukhikh, S. P. Khranenko, A. V. Zadesenets & S. A. Gromilov

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  1. A. S. Sukhikh
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  2. S. P. Khranenko
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  3. A. V. Zadesenets
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  4. S. A. Gromilov
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Correspondence to S. A. Gromilov.

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Translated by A. Sin’kov

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Sukhikh, A.S., Khranenko, S.P., Zadesenets, A.V. et al. Structural Features of Mixed Anions (Мо7 – хWхO24)6– and Their Packing in the [Pd(NH3)4]3(Мо7 – хWxO24)⋅6H2O Crystal Structure. Crystallogr. Rep. 67, 143–149 (2022). https://doi.org/10.1134/S1063774522020213

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  • DOI: https://doi.org/10.1134/S1063774522020213

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