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Synthesis and crystal structure of K3[NpO4(OH)2]

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Abstract

Attempts were made to isolate anhydrous compounds of [NpO4(OH)2]3− anions with heavy alkali metal cations (K, Rb, Cs) by crystallization at elevated temperatures, and the salt K3[NpO4(OH)2] was isolated and studied. Crystals of K3[NpO4(OH)2] consist of tetragonal bipyramidal [NpO4(OH)2]3− anions and K+ cations. The [NpO4(OH)2]3− anion occupies the position in the symmetry center. The Np-O distances in this anion are 1.8992(7) and 1.9100(7) Å in the equatorial plane of the bipyramid and 2.3231(8) Å with OH groups. The OH hydrogen atoms participate in weak H bonds [O⋯O 3.0250(11) Å] linking the anions in layers [NpO4(OH)2] 3n− n parallel to the (010) plane. In the interlayer space, there are two crystallographically different K atoms. Their coordination number (CN) can be considered to be equal to 7 and 8. Comparison with the structures of the known compounds Na3[NpO4(OH)2] and K3[NpO4(OH)2]·2H2O was made. The structure of the latter compound was redetermined with higher accuracy. The failure of attempts to prepare the anhydrous rubidium and cesium compounds is probably due to large ionic radius of these cations, requiring high coordination number.

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References

  1. Tomilin, S.V., Volkov, Yu.F., Kapshukov, I.I., and Rykov, A.G., Radiokhimiya, 1981, vol. 23, no. 5, pp. 704–709.

    CAS  Google Scholar 

  2. Grigoriev, M.S. and Krot, N.N., Acta Crystallogr., Sect. E, 2007, vol. 63, no. 9, p. i176.

    Article  CAS  Google Scholar 

  3. Tomilin, S.V., Volkov, Yu.F., Kapshukov, I.I., and Rykov, A.G., Radiokhimiya, 1981, vol. 23, no. 5, pp. 710–715.

    CAS  Google Scholar 

  4. Grigoriev, M.S. and Krot, N.N., Acta Crystallogr., Sect. E, 2008, vol. 64, no. 1, p. i6.

    Article  CAS  Google Scholar 

  5. Tomilin, S.V., Volkov, Yu.F., Kapshukov, I.I., and Rykov, A.G., Radiokhimiya, 1981, vol. 23, no. 6, pp. 862–867.

    CAS  Google Scholar 

  6. Krot, N.N., Charushnikova, I.A., Grigor’ev, M.S., and Perminov, V.P., Radiochemistry, 2011, vol. 53, no. 6, pp. 580–586.

    Article  Google Scholar 

  7. Krot, N.N., Charushnikova, I.A., Perminov, V.P., and Makarenkov, V.I., Radiochemistry, 2013, vol. 55, no. 1, pp. 5–10.

    Article  CAS  Google Scholar 

  8. Tomilin, S.V., Volkov, Yu.F., Visyashcheva, G.I., and Kapshukov, I.I., Radiokhimiya, 1983, vol. 25, no. 1, pp. 58–62.

    CAS  Google Scholar 

  9. Charushnikova, I.A., Krot, N.N., Starikova, Z.A., and Polyakova, I.N., Radiochemistry, 2007, vol. 49, no. 3, pp. 217–221.

    Article  CAS  Google Scholar 

  10. Grigor’ev, M.S., Baturin, N.A., Tananaev, I.G., and Krot, N.N., Radiokhimiya, 1993, vol. 35, no. 4, pp. 12–16.

    Google Scholar 

  11. Grigor’ev, M.S., Krot, N.N., and Perminov, V.P., Radiochemistry, 2013, vol. 55, no. 3, pp. 264–268.

    Article  Google Scholar 

  12. Krot, N.N., Charushnikova, I.A., Grigor’ev, M.S., and Perminov, V.P., Radiochemistry, 2012, vol. 54, no. 3, pp. 241–246.

    Article  CAS  Google Scholar 

  13. Sheldrick, G.M., SADABS, Madison, Wisconsin (USA): Bruker AXS, 2004.

    Google Scholar 

  14. Sheldrick, G.M., Acta Crystallogr., Sect. A, 2008, vol. 64, no. 1, pp. 112–122.

    Article  CAS  Google Scholar 

Download references

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Authors and Affiliations

  1. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, korp. 4, Moscow, 119071, Russia

    N. N. Krot, M. S. Grigor’ev & I. A. Charushnikova

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  1. N. N. Krot
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  2. M. S. Grigor’ev
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  3. I. A. Charushnikova
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Correspondence to I. A. Charushnikova.

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Original Russian Text © N.N. Krot, M.S. Grigor’ev, I.A. Charushnikova, 2014, published in Radiokhimiya, 2014, Vol. 56, No. 5, pp. 407–410.

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Krot, N.N., Grigor’ev, M.S. & Charushnikova, I.A. Synthesis and crystal structure of K3[NpO4(OH)2]. Radiochemistry 56, 476–480 (2014). https://doi.org/10.1134/S1066362214050038

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  • DOI: https://doi.org/10.1134/S1066362214050038

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