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Crystal Lab › Prototype structures › Orthorhombic

Low Temperature AgC₄N₃

Orthorhombic · space group Ima2 (No. 46) · Pearson oI32

Symmetry elements and Wyckoff positions (interactive)

Low Temperature AgC₄N₃ in Ima2

Setting
Loading the group…
x = 0.10, y = 0.17, z = 0.08

Unit cell

Lattice constants
a = 8.064 Å, b = 9.777 Å, c = 6.279 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
495.0 ų
Atoms in the conventional cell
32 (Ag 4, C 16, N 12)
Formula units Z
4
Pearson symbol
oI32 — orthorhombic, body-centred lattice, 32 atoms per conventional cell
Symmetry operations
8 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Ag1Ag4b40.25000.64740.5546
C2C4b40.25000.45250.9888
C3C4b40.25000.37810.1798
N5N4b40.25000.53190.8313
C4C8c80.09730.15700.7735
N6N8c80.97180.18350.8470

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 32 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

AB4C3_oI32_46_b_2bc_bc-002: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oI32, then the space-group number 46, then the Wyckoff letters occupied by each element in turn (Ag: 4b; C: 4b; C: 4b; N: 4b; C: 8c; N: 8c). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Note: 100 K.

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry AB4C3_oI32_46_b_2bc_bc-002 (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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