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Crystal Lab › Prototype structures › Hexagonal

Mavlyanovite (Mn₅Si₃, D8₈)

Hexagonal · space group P63/mcm (No. 193) · Pearson hP16 · Strukturbericht D88 · mineral: mavlyanovite

Symmetry elements and Wyckoff positions (interactive)

Mavlyanovite (Mn₅Si₃, D8₈) in P63/mcm

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

Unit cell

Lattice constants
a = 6.910 Å, b = 6.910 Å, c = 4.814 Å; α = 90.00°, β = 90.00°, γ = 120.00°
Cell volume
199.1 ų
Atoms in the conventional cell
16 (Mn 10, Si 6)
Formula units Z
2
Pearson symbol
hP16 — hexagonal / trigonal, primitive lattice, 16 atoms per conventional cell
Symmetry operations
24 per cell

Crystallographic sites

SiteElementWyckoffMultiplicityxyz
Mn1Mn4d40.33330.66670.0000
Mn2Mn6g60.76420.00000.2500
Si3Si6g60.40080.00000.2500

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 24 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

A5B3_hP16_193_dg_g-001: the stoichiometry comes first (A, B, C… are the elements in alphabetical order of their site labels), then the Pearson symbol hP16, then the space-group number 193, then the Wyckoff letters occupied by each element in turn (Mn: 4d; Mn: 6g; Si: 6g). Two structures with the same label are the same arrangement with different cell parameters or coordinates.

Other compounds with this structure

Ce₅Ge₃, Ce₅Pb₃, Ce₅Sb₃, Dy₅Ge₃, Dy₅Sb₃, Er₅Si₃, Fe₅Si₃ (HT), Gd₅Ge₃, Gd₅Sb₃, Hf₅Ga₃, Hf₅Ge₃, Hf₅Si₃, Hf₅Sn₃, Ho₅Sb₃, Ho₅Sn₃, La₅Ge₃, La₅Pb₃, La₅Sb₃, Lu₅Si₃, Mg₅Hg₃, Mn₅Ge₃, Mn₅Si₃, Mo₅Si₃, Nb₅Ge₃, Nb₅Si₃, Nd₅Sb₃, Nd₅Sn₃, Pr₅Sb₃, Sc₅Ga₃, Sc₅Ge₃, Sc₅Pb₃, Sc₅Si₃, Sc₅Sn₃, Ta₅Si₃, Tb₅Sb₃, Ti₅Ga₃, Ti₅Ge₃, Ti₅P₃, Ti₅Si₃, Ti₅Sn₃, U₅Ge₃, V₅Ga₃, V₅Ge₃, V₅Si₃, W₅Si₃, Y₅Ga₃, Y₅Ge₃, Y₅Pb₃, Y₅Si₃, Y₅Sn₃, Yb₅Sb₃, Zr₅Al₃, Zr₅Ga₃, Zr₅Ge₃, Zr₅Pb₃, Zr₅Pt₃, Zr₅Sb₃, Zr₅Si₃, Zr₅Sn₃, Cr_{5-x-y}Fe_{x}Nb_{y}Si₃, Mn_{5-x}Fe_{x}Si₃, Ti₅Ga_{1.5}Ge_{1.5} <!--beginning with an

Note: D8₈, Mavlyanovite.

Source

Coordinates and cell from the AFLOW Encyclopedia of Crystallographic Prototypes, entry A5B3_hP16_193_dg_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.

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