Electron microscopy
P63/mcm (193) Space Group
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Table 1904. P63/mcm (193) space group.

Name in the International Tables for Crystallography
P63/mcm P
191 6/mmm
Crystal system
Hexagonal 6/mmm
0 ≤ x ≤ 2/3 and 0 ≤ y ≤ 1/2 and 0 ≤ z ≤ 1/4 and x ≤ (1+y)/2 and y ≤ min(1-x,x)
Symmetry (atomic coordinates)
X, Y, Z; -Y, X-Y, Z; Y-X, -X, Z; -X, -Y, 1/2+Z; Y, Y-X, 1/2+Z; X-Y, X, 1/2+Z; Y, X, 1/2-Z; X-Y, -Y, 1/2-Z; -X, Y-X, 1/2-Z; -Y, -X, -Z; Y-X, Y, -Z; X, X-Y, -Z; -X, -Y, -Z; Y, Y-X, -Z; X-Y, X, -Z; X, Y, 1/2-Z; Y-X, -X, 1/2-Z; -Y, X-Y, 1/2-Z; -Y, -X, 1/2+Z; Y-X, Y, 1/2+Z; X, X-Y, 1/2+Z; Y, X, Z; X-Y, -Y, Z; -X, Y-X, Z
0001:1 = 2n; hkil: none; hh2hl: none; hh01: 1 = 2n
Crystal examples

ZrI3 (zirconium iodide): Zr at 0, 0, 0 and I at 0.325, 0, 1/4




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