Skip to content

Crystal Lab › Prototype structures › Orthorhombic

Ga₃Pt₅

Orthorhombic · space group Cmmm (No. 65) · Pearson oC16

Symmetry elements and Wyckoff positions (interactive)

Ga₃Pt₅ in Cmmm

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

Unit cell

Lattice constants
a = 8.031 Å, b = 7.440 Å, c = 3.948 Å; α = 90.00°, β = 90.00°, γ = 90.00°
Cell volume
235.9 ų
Atoms in the conventional cell
16 (Ga 6, Pt 10)
Formula units Z
2
Pearson symbol
oC16 — orthorhombic, base-centred lattice, 16 atoms per conventional cell
Symmetry operations
16 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Ga1Ga2a20.00000.00000.0000
Pt3Pt2b20.50000.00000.0000
Pt4Pt4e40.25000.25000.0000
Ga2Ga4h40.25000.00000.5000
Pt5Pt4j40.00000.22500.5000

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 16 atoms drawn above are these sites multiplied by all 16 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

A3B5_oC16_65_ah_bej-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol oC16, then the space-group number 65, then the Wyckoff letters occupied by each element in turn (Ga: 2a; Pt: 2b; Pt: 4e; Ga: 4h; Pt: 4j). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

Al₃Ni₅, Ga₃Ni₅, Mn₃Pd₅ <!--beginning with an

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A3B5_oC16_65_ah_bej-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.

← Ag₃Te₂Tl  ·  Space group Cmmm (19 prototypes)  ·  All prototypes  ·  Nb₃O₇F →