Crystal Lab › Prototype structures › Trigonal
Rosiaite (PbSb₂O₆)
Trigonal · space group P-31m (No. 162) · Pearson hP9 · mineral: rosiaite
Symmetry elements and Wyckoff positions (interactive)
Rosiaite (PbSb₂O₆) in P-31m
SettingUnit cell
- Lattice constants
- a = 5.295 Å, b = 5.295 Å, c = 5.372 Å; α = 90.00°, β = 90.00°, γ = 120.00°
- Cell volume
- 130.4 ų
- Atoms in the conventional cell
- 9 (Pb 1, Sb 2, O 6)
- Formula units Z
- 1
- Pearson symbol
- hP9 — hexagonal / trigonal, primitive lattice, 9 atoms per conventional cell
- Symmetry operations
- 12 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Pb2 | Pb | 1a | 1 | 0.0000 | 0.0000 | 0.0000 |
| Sb3 | Sb | 2d | 2 | 0.3333 | 0.6667 | 0.5000 |
| O1 | O | 6k | 6 | 0.3770 | 0.0000 | 0.2965 |
The multiplicity and the Wyckoff letter say how many copies of the site the group makes in one cell and on which kind of symmetry element the site sits; the 9 atoms drawn above are these sites multiplied by all 12 operations. Press Wyckoff under Colour to see the sites, and tick a symmetry element on the left to see which atoms lie on it.
How to read the label
A6BC2_hP9_162_k_a_d-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol hP9, then the space-group number 162, then the Wyckoff letters occupied by each element in turn (Pb: 1a; Sb: 2d; O: 6k). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
BaSb₂O₆, CaAs₂O₆, CaOs₂O₆, CaSb₂O₆, CdAs₂O₆, CdSb₂O₆, CoAs₂O₆, HfLi₂F₆, HgAs₂O₆, MnAs₂O₆, MnSb₂O₆, MoLi₂F₆, NbLi₂F₆, NiAs₂O₆, PbAs₂O₆, PbLi₂F₆, PbSb₂O₆, PdAs₂O₆, SrAs₂O₆, SrRu₂O₆, SrSb₂O₆, UCr₂O₆, UV₂O₆, ZrLi₂F₆, MnSeTeO₆, MnSnTeO₆, PbTeGeO₆, SrIr₂O₆ <!--beginning with an
Note: Rosiaite.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A6BC2_hP9_162_k_a_d-001 (M. J. Mehl et al., Comput. Mater. Sci. 136, S1 (2017); D. Hicks et al., ibid. 161, S1 (2019) and 199, 110450 (2021); S. Eckert et al., ibid. 240, 112988 (2024)). Symmetry elements, Wyckoff assignment and the diagram are computed on this page from the group operations.
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