Crystal Lab › Prototype structures › Monoclinic
KICl₄cdotH₂O (H0₁₀)
Monoclinic · space group P121/c1 (No. 14) · Pearson mP28 · Strukturbericht H010
Symmetry elements and Wyckoff positions (interactive)
KICl₄cdotH₂O (H0₁₀) in P121/c1
SettingUnit cell
- Lattice constants
- a = 13.282 Å, b = 14.351 Å, c = 14.356 Å; α = 90.00°, β = 162.73°, γ = 90.00°
- Cell volume
- 812.5 ų
- Atoms in the conventional cell
- 28 (Cl 16, H 4, I 4, K 4)
- Formula units Z
- 4
- Pearson symbol
- mP28 — monoclinic, primitive lattice, 28 atoms per conventional cell
- Symmetry operations
- 4 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Cl1 | Cl | 4e | 4 | 0.0273 | 0.7807 | 0.2565 |
| Cl2 | Cl | 4e | 4 | 0.5668 | 0.0955 | 0.7534 |
| Cl3 | Cl | 4e | 4 | 0.8602 | 0.9884 | 0.2426 |
| Cl4 | Cl | 4e | 4 | 0.7079 | 0.8953 | 0.7477 |
| H5 | H | 4e | 4 | 0.3500 | 0.7080 | 0.3070 |
| I6 | I | 4e | 4 | 0.2970 | 0.9408 | 0.5011 |
| K7 | K | 4e | 4 | 0.3024 | 0.3409 | 0.2233 |
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 28 atoms drawn above are these sites multiplied by all 4 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
A4BCD_mP28_14_4e_e_e_e-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol mP28, then the space-group number 14, then the Wyckoff letters occupied by each element in turn (Cl: 4e; Cl: 4e; Cl: 4e; Cl: 4e; H: 4e; I: 4e; K: 4e). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Note: H0₁₀.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A4BCD_mP28_14_4e_e_e_e-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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