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References (9)
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- Publisher
- Springer Journals
- Copyright
- 2003 MAIK "Nauka/Interperiodica"
- ISSN
- 1063-7745
- eISSN
- 1562-689X
- DOI
- 10.1134/1.1564197
- Publisher site
- See Article on Publisher Site
Abstract
Abstract The crystal structure of the compound Sr(AsUO6)2 · 8H2O is determined by X-ray diffraction analysis (monoclinic system, sp. gr. Pc, unit-cell parameters a = 7.154(1) Å, b = 7.101(1) Å, c = 18.901(7) Å, β = 92.67(2)°, Z = 2). The structure is built by (001)-parallel [AsUO6]− layers formed by flattened square UO6 bipyramids and AsO4 tetrahedra. The neighboring layers are connected via SrO8 square antiprisms. The cavities of the polyhedral framework thus formed are occupied by H2O molecules. The displacements of the anion complexes by a half-translation with respect to one another along only one lattice period is a characteristic feature of this polymorphous modification of the uran-mica group.
Journal
Crystallography Reports – Springer Journals
Published: Mar 1, 2003
Keywords: Crystallography and Scattering Methods