Ca₅Ga₂As₆

Unit cell

Lattice constants

a = 13.224 Å, b = 11.357 Å, c = 4.138 Å; α = 90.00°, β = 90.00°, γ = 90.00°

Cell volume

621.5 ų

Atoms in the conventional cell

26 (Ca 10, As 12, Ga 4)

Formula units Z

2

Pearson symbol

oP26 — orthorhombic, primitive lattice, 26 atoms per conventional cell

Symmetry operations

8 per cell

Crystallographic sites

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 26 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

A6B5C2_oP26_55_g2h_a2g_h-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oP26, then the space-group number 55, then the Wyckoff letters occupied by each element in turn (Ca: 2a; As: 4g; Ca: 4g; Ca: 4g; As: 4h; As: 4h; Ga: 4h). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

Ca₅Al₂Bi₆, Ca₅Al₂Sb₆, Ca₅Ga₂Sb₆, Ca₅In₂Sb₆, Eu₅In₂Sb₆, Sr₅In₂Sb₆ <!--beginning with an

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A6B5C2_oP26_55_g2h_a2g_h-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.