Electron microscopy
 
P2221 (17) Space Group
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Table 1666. P2221 (17) space group.

Name in the International Tables for Crystallography
P2221 P
47 222
Crystal system
Orthorhombic mmm
Asymm
0 ≤ x ≤ 1/2 and 0 ≤ y ≤ 1/2 and 0 ≤ z ≤ 1
4 Absence of reflections

0 0 l: l ≠ 2n.

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
 

 

 

 

 

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