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

3m Point Group

Table 3002 list all the space groups which have point group 3m.

Table 3002. All space groups which have point group 3m.
Space Group Patterson Space Group Number of Symmetry Operators Crystal System Laue Class Lattice Type
P3m1 164 6 Trigonal -3m P
P31m 162 6 Trigonal -3m P
P3c1 164 6 Trigonal -3m P
P31c 162 6 Trigonal -3m P
R3m 166 18 Trigonal -3m R
R3c 166 18 Trigonal -3m R

In 3m, we have the operation of  3­fold axis as shown in Figure 3002.

3m point group

Figure 3002. 3m point group.