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

Cc (9) Space Group

Table 1833. Cc (9) space group.

Name in the International Tables for Crystallography
Cc C
12 m
Crystal system
Monoclinic 2/m
Asymm
0 ≤ x ≤ 1 and 0 ≤ y ≤ 1/4 and 0 ≤ z ≤1
4 Crystal symmetry Is non-centrosymmetric because it has not -x,-y,-z in its symmetry (no center of inversion).
Symmetry (atomic coordinates)
X, Y, Z; X, -Y, 1/2+Z; 1/2+X, 1/2+Y, Z; 1/2+X, 1/2-Y, 1/2+Z
Crystal examples
 

For a monoclinic crystal system, if the systematic absences show the presence of C-center and c-glide, then the possible space group can be Cc