| p2mm | No. 6 | p2mm |
Generators selected (1); t(1, 0); t(0, 1); (2); (3)
General position
| Multiplicity, Wyckoff letter, Site symmetry | Coordinates | |||||||
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I Maximal translationengleiche subgroups
| [2] p1m1 (3, pm) | 1; 3 | ||
| [2] p11m (3, pm) | 1; 4 | b, -a | |
| [2] p211 (2, p2) | 1; 2 |
II Maximal klassengleiche subgroups
- Enlarged unit cell
[2] a' = 2a
| p2mg (7) | <2; 3 + (1, 0)> | 2a, b | |
| p2mg (7) | <3; 2 + (1, 0)> | 2a, b | 1/2, 0 |
| p2mm (6) | <2; 3> | 2a, b | |
| p2mm (6) | <(2; 3) + (1, 0)> | 2a, b | 1/2, 0 |
[2] b' = 2b
| p2gm (7, p2mg) | <2; 3 + (0, 1)> | 2b, -a | |
| p2gm (7, p2mg) | <(2; 3) + (0, 1)> | 2b, -a | 0, 1/2 |
| p2mm (6) | <2; 3> | a, 2b | |
| p2mm (6) | <3; 2 + (0, 1)> | a, 2b | 0, 1/2 |
[2] a' = 2a, b' = 2b
| c2mm (9) | <2; 3> | 2a, 2b | |
| c2mm (9) | <3; 2 + (0, 1)> | 2a, 2b | 0, 1/2 |
| c2mm (9) | <(2; 3) + (1, 0)> | 2a, 2b | 1/2, 0 |
| c2mm (9) | <2 + (1, 1); 3 + (1, 0)> | 2a, 2b | 1/2, 1/2 |
[3] a' = 3a
|
[3] b' = 3b
|
- Series of maximal isomorphic subgroups
[p] a' = pa
| p2mm (6) | <(2; 3) + (2u, 0)> | pa, b | u, 0 |
| p > 2; 0 ≤ u < p p conjugate subgroups for the prime p |
[p] b' = pb
| p2mm (6) | <3; 2 + (0, 2u)> | a, pb | 0, u |
| p > 2; 0 ≤ u < p p conjugate subgroups for the prime p |
I Minimal translationengleiche supergroups
| [2] p4mm (11) |
II Minimal non-isomorphic klassengleiche supergroups
- Additional centring translations
| [2] c2mm (9) |
- Decreased unit cell
| none |
