Practical Electron Microscopy and Database

An Online Book, Second Edition by Dr. Yougui Liao (2006)

Practical Electron Microscopy and Database - An Online Book

Chapter/Index: Introduction | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Appendix

Fmm2 (42) Space Group

Table 1648. Fmm2 (42) space group.

Name in the International Tables for Crystallography
Fmm2 F
69 mm2
Crystal system
Orthorhombic mmm
Asymm
0 ≤ x ≤ 1/4 and 0 ≤ y ≤ 1/4 and 0 ≤ z ≤ 1
16 Absence of reflections

 

Translation
 
Symmetry (atomic coordinates)
X, Y, Z; -X, -Y, Z; X, -Y, Z; -X, Y, Z; X, 1/2+Y, 1/2+Z; -X, 1/2-Y, 1/2+Z; X, 1/2-Y, 1/2+Z; -X, 1/2+Y, 1/2+Z; 1/2+X, Y, 1/2+Z; 1/2-X, -Y, 1/2+Z; 1/2+X, -Y, 1/2+Z; 1/2-X, Y, 1/2+Z; 1/2+X, 1/2+Y, Z; 1/2-X, 1/2-Y, Z; 1/2+X, 1/2-Y, Z; 1/2-X, 1/2+Y, Z
Crystal examples