Crystal structure of the uranyl arsenate mineral hügelite, Pb2(UO2)3O2(AsO4)2(H2O)5, revisited: a correct unit cell, twinning and hydrogen bonding

Plášil, J.; Petříček, V.; Škácha, P.

doi:10.1107/S2052520621004091

Acta Crystallographica Section B
Acta Crystallographica
Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS

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Figure 4
The crystal structure of hügelite projected down the monoclinic b axis. UO₇ bipyramids are shown in transparent yellow, UO₈ bipyramids are opaque yellow, (As/P)O₄ tetrahedra are green, Pb atoms are dark gray (shown as displacement ellipsoids at the 75% probability level), H atoms are light gray and O atoms are red. The unit-cell edges are outlined with solid black lines. H⋯A bonds have been omitted for clarity.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 77| Part 3| June 2021| Pages 378-383

https://doi.org/10.1107/S2052520621004091

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