Origin at -6
Asymmetric unit | 0 ≤ x ≤ 2/3; 0 ≤ y ≤ 2/3; 0 ≤ z ≤ 1/2; x ≤ (1 + y)/2; y ≤ min(1 - x, (1 + x)/2) |
Vertices | 0, 0, 0 | 1/2, 0, 0 | 2/3, 1/3, 0 | 1/3, 2/3, 0 | 0, 1/2, 0 | 0, 0, 1/2 | 1/2, 0, 1/2 | 2/3, 1/3, 1/2 | 1/3, 2/3, 1/2 | 0, 1/2, 1/2 |
|
(1) 1 | (2) 3+ 0, 0, z | (3) 3- 0, 0, z |
(4) m x, y, 0 | (5) -6- 0, 0, z; 0, 0, 0 | (6) -6+ 0, 0, z; 0, 0, 0 |
Generators selected (1); t(1, 0, 0); t(0, 1, 0); t(0, 0, 1); (2); (4)
Multiplicity, Wyckoff letter, Site symmetry | Coordinates | Reflection conditions |
| | General:
|
| (1) x, y, z | (2) -y, x - y, z | (3) -x + y, -x, z | (4) x, y, -z | (5) -y, x - y, -z | (6) -x + y, -x, -z |
| no conditions |
| | Special: as above, plus
|
| x, y, 1/2 | -y, x - y, 1/2 | -x + y, -x, 1/2 |
| no extra conditions |
| x, y, 0 | -y, x - y, 0 | -x + y, -x, 0 |
| no extra conditions |
| | no extra conditions |
| | no extra conditions |
| | no extra conditions |
| | no extra conditions |
| | no extra conditions |
| | no extra conditions |
| | no extra conditions |
| | no extra conditions |
| | no extra conditions |
Symmetry of special projections
Along [001] p3 a' = a b' = b Origin at 0, 0, z | Along [100] p11m a' = 1/2(a + 2b) b' = c Origin at x, 0, 0 | Along [210] p11m a' = 1/2b b' = c Origin at x, 1/2x, 0 |
Maximal non-isomorphic subgroups
I | | [2] P3 (143) | 1; 2; 3 |
| | [3] Pm (6) | 1; 4 |
Maximal isomorphic subgroups of lowest index
IIc | [2] P-6 (c' = 2c) (174); [3] H-6 (a' = 3a, b' = 3b) (P-6, 174) |
Minimal non-isomorphic supergroups
I | [2] P6/m (175); [2] P63/m (176); [2] P-6m2 (187); [2] P-6c2 (188); [2] P-62m (189); [2] P-62c (190) |