Imma (74) space group

Imma (74) Space Group
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Table 1630. Imma (74) space group.

Name in the International Tables for Crystallography	Imma	Lattice type	I
Patterson space group	71	Point group	mmm
Crystal system	Orthorhombic	Laue class	mmm
Asymm	0 ≤ x ≤ 1/4 and 0 ≤ y ≤ 1/4 and 0 ≤ z ≤ 1
Number of symmetry operators	16	Absence of reflections
Translation
Symmetry (atomic coordinates)	X, Y, Z; -X, 1/2-Y, Z; -X, 1/2+Y, -Z; X, -Y, -Z; -X, -Y, -Z; X, 1/2+Y, -Z; X, 1/2-Y, Z; -X, Y, Z; 1/2+X, 1/2+Y, 1/2+Z; 1/2-X, -Y, 1/2+Z; 1/2-X, Y, 1/2-Z; 1/2+X, 1/2-Y, 1/2-Z; 1/2-X, 1/2-Y, 1/2-Z; 1/2+X, Y, 1/2-Z; 1/2+X, -Y, 1/2+Z; 1/2-X, 1/2+Y, 1/2+Z
Crystal examples

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