P2221 (17) Space Group

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P222₁ (17) Space Group

Table 1666. P222₁ (17) space group.

Name in the International Tables for Crystallography	P222₁	Lattice type	P
Patterson space group	47	Point group	222
Crystal system	Orthorhombic	Laue class	mmm
Asymm	0 ≤ x ≤ 1/2 and 0 ≤ y ≤ 1/2 and 0 ≤ z ≤ 1
Number of symmetry operators	4	Absence of reflections	0 0 l: l ≠ 2n.
Indication by absence of reflections	A 2₁-screw axis along the c-axis
Translation
Symmetry (atomic coordinates)	X, Y, Z; -X, -Y, 1/2+Z; -X, Y, 1/2-Z; X, -Y, -Z
Crystal examples