Synthesis and Structure of Mixed-Cation Salts with [PuO4(OH)2]3– Anions
- Authors: Grigor’ev M.S.1, Krot N.N.1, Charushnikova I.A.1
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Affiliations:
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Issue: Vol 60, No 3 (2018)
- Pages: 233-240
- Section: Article
- URL: https://journals.rcsi.science/1066-3622/article/view/224473
- DOI: https://doi.org/10.1134/S1066362218030025
- ID: 224473
Cite item
Abstract
Mixed-cation salts of the composition NaM2[PuO4(OH)2]·4H2O, where M = Rb (I) and Cs (III), and NaRb5[PuO4(OH)2]2·6H2O (II) were synthesized and structurally characterized. The central Pu atom in [PuO4(OH)2]3– anions has oxygen surrounding in the form of a tetragonal bipyramid with oxygen atoms of hydroxide ions in apical positions. The hydrated Na+ cations have oxygen surrounding in the form of a distorted octahedron. In the structure of I, there are two independent Rb+ cations with 10- and 12-vertex coordination polyhedra (CPs), and in the structure of II, three independent Rb+ cations with the 12-, 11-, and 13-vertex CPs. In the structure of III, the Cs+ cation has a 12-vertex CP. Frameworks of large Rb+ or Cs+ cations can be distinguished in the structure. The CPs of the Pu and Na atoms (I, III) sharing a common edge or the isolated CPs of the Pu and Na atoms (II) are incorporated in these frameworks. Hydrogen bonds influence the crystal packing and the geometric characteristics of the [PuO4(OH)2]3– anions.
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About the authors
M. S. Grigor’ev
Frumkin Institute of Physical Chemistry and Electrochemistry
Author for correspondence.
Email: grigoriev@ipc.rssi.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071
N. N. Krot
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: grigoriev@ipc.rssi.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071
I. A. Charushnikova
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: grigoriev@ipc.rssi.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071