Crystal Lab › Prototype structures › Monoclinic
Rb₂C₂O₄cdotH₂O
Monoclinic · space group C12/c1 (No. 15) · Pearson mC36
Symmetry elements and Wyckoff positions (interactive)
Rb₂C₂O₄cdotH₂O in C12/c1
SettingUnit cell
- Lattice constants
- a = 9.662 Å, b = 6.350 Å, c = 16.955 Å; α = 90.00°, β = 141.91°, γ = 90.00°
- Cell volume
- 641.7 ų
- Atoms in the conventional cell
- 36 (H 4, C 8, O 16, Rb 8)
- Formula units Z
- 4
- Pearson symbol
- mC36 — monoclinic, base-centred lattice, 36 atoms per conventional cell
- Symmetry operations
- 8 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| H2 | H | 4e | 4 | 0.0000 | 0.2233 | 0.2500 |
| C1 | C | 8f | 8 | 0.0442 | 0.0716 | 0.0546 |
| O3 | O | 8f | 8 | 0.9788 | 0.0248 | 0.0933 |
| O4 | O | 8f | 8 | 0.1702 | 0.2268 | 0.0940 |
| Rb5 | Rb | 8f | 8 | 0.0087 | 0.5656 | 0.1297 |
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 36 atoms drawn above are these sites multiplied by all 8 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
A2BC4D2_mC36_15_f_e_2f_f-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol mC36, then the space-group number 15, then the Wyckoff letters occupied by each element in turn (H: 4e; C: 8f; O: 8f; O: 8f; Rb: 8f). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A2BC4D2_mC36_15_f_e_2f_f-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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