Crystal Lab › Prototype structures › Cubic
CaCu₃Mn₄O₁₂
Cubic · space group Im-3 (No. 204) · Pearson cI40
Symmetry elements and Wyckoff positions (interactive)
CaCu₃Mn₄O₁₂ in Im-3
SettingUnit cell
- Lattice constants
- a = 7.241 Å, b = 7.241 Å, c = 7.241 Å; α = 90.00°, β = 90.00°, γ = 90.00°
- Cell volume
- 379.7 ų
- Atoms in the conventional cell
- 40 (Ca 2, Cu 6, Mn 8, O 24)
- Formula units Z
- 2
- Pearson symbol
- cI40 — cubic, body-centred lattice, 40 atoms per conventional cell
- Symmetry operations
- 48 per cell
Crystallographic sites
| Site | Element | Wyckoff | Multiplicity | x | y | z |
|---|---|---|---|---|---|---|
| Ca1 | Ca | 2a | 2 | 0.0000 | 0.0000 | 0.0000 |
| Cu2 | Cu | 6b | 6 | 0.0000 | 0.5000 | 0.5000 |
| Mn3 | Mn | 8c | 8 | 0.2500 | 0.2500 | 0.2500 |
| O4 | O | 24g | 24 | 0.0000 | 0.3033 | 0.1822 |
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 40 atoms drawn above are these sites multiplied by all 48 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
AB3C4D12_cI40_204_a_b_c_g-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol cI40, then the space-group number 204, then the Wyckoff letters occupied by each element in turn (Ca: 2a; Cu: 6b; Mn: 8c; O: 24g). Two structures with the same label are the same arrangement with different cell parameters or coordinates.
Other compounds with this structure
CaCo₃V₄O₁₂, CaCu₃Co₄O₁₂, CaCu₃Cr₄O₁₂, CaCu₃Fe₄O₁₂, CaCu₃Ge₄O₁₂, CaCu₃Ir₄O₁₂, CaCu₃Mn₄O₁₂, CaCu₃Pt₄O₁₂, CaCu₃Rh₄O₁₂, CaCu₃Ru₄O₁₂, CaCu₃Sn₄O₁₂, CaCu₃Ti₄O₁₂, CaCu₃V₄O₁₂, CaCu₃Zn₄O₁₂, CaFe₃Mn₄O₁₂, CaFe₃Ti₄O₁₂, CaMn₃V₄O₁₂, CaPd₃Ti₄O₁₂, CaPd₃V₄O₁₂, CdCu₃Fe₄O₁₂, CdCu₃Ti₄O₁₂, CeCu₃Co₄O₁₂, CeCu₃Cr₄O₁₂, CeCu₃Fe₄O₁₂, CeCu₃Mn₄O₁₂, CeMn₃Cr₄O₁₂, DyCu₃Fe₄O₁₂, DyCu₃Mn₄O₁₂, ErCu₃Fe₄O₁₂, EuCu₃Fe₄O₁₂, EuCu₃Mn₄O₁₂, GdCu₃Fe₄O₁₂, GdCu₃Mn₄O₁₂, GdMn₃V₄O₁₂, HoCu₃Fe₄O₁₂, HoCu₃Mn₄O₁₂, LaCu₃Cr₄O₁₂, LaCu₃Fe₄O₁₂, LaCu₃Ir₄O₁₂, LaCu₃Mn₄O₁₂, LaCu₃Ru₄O₁₂, LaMn₃Rh₄O₁₂, LaMn₃V₄O₁₂, LuCu₃Fe₄O₁₂, MnCu₃V₄O₁₂, NaCu₃Ir₄O₁₂, NaCu₃Ru₄O
Note: Double Perovskite.
Source
Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB3C4D12_cI40_204_a_b_c_g-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.
← Bergman [Mg₃₂(Al,Zn)₄₉] · Space group Im-3 (11 prototypes) · All prototypes