
Origin at centre (6/m)
Asymmetric unit | 0 ≤ x; 0 ≤ y; 0 ≤ z ≤ 1/2; y ≤ x |
(1) 1 | (2) 3+ 0, 0, z | (3) 3- 0, 0, z |
(4) 2 0, 0, z | (5) 6- 0, 0, z | (6) 6+ 0, 0, z |
(7) -1 0, 0, 0 | (8) -3+ 0, 0, z; 0, 0, 0 | (9) -3- 0, 0, z; 0, 0, 0 |
(10) m x, y, 0 | (11) -6- 0, 0, z; 0, 0, 0 | (12) -6+ 0, 0, z; 0, 0, 0 |
Generators selected (1); t(0, 0, 1); (2); (4); (7)
Multiplicity, Wyckoff letter, Site symmetry | Coordinates | Reflection conditions |
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| | General:
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| (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 | (7) -x, -y, -z | (8) y, -x + y, -z | (9) x - y, x, -z | (10) x, y, -z | (11) -y, x - y, -z | (12) -x + y, -x, -z |
| no conditions |
| | Special: no extra conditions |
| x, y, 1/2 | -y, x - y, 1/2 | -x + y, -x, 1/2 | -x, -y, 1/2 | y, -x + y, 1/2 | x - y, x, 1/2 |
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| x, y, 0 | -y, x - y, 0 | -x + y, -x, 0 | -x, -y, 0 | y, -x + y, 0 | x - y, x, 0 |
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Symmetry of special projections
Along [001] 6
Origin at 0, 0, z | Along [100] 2mm a' = c Origin at x, 0, 0 | Along [210] 2mm a' = c Origin at x, 1/2x, 0 |
Maximal non-isotypic non-enantiomorphic subgroups
I | [2] -6 (59) | 1; 2; 3; 10; 11; 12 |
| [2] 6 (53) | 1; 2; 3; 4; 5; 6 |
| [2] -3 (45) | 1; 2; 3; 7; 8; 9 |
| [3] 112/m (11) | 1; 4; 7; 10 |
IIb | [2] 63/m (c' = 2c) (61) |
Maximal isotypic subgroups and enantiomorphic subgroups of lowest index
IIc | [2] 6/m (c' = 2c) (60) |
Minimal non-isotypic non-enantiomorphic supergroups
I | [2] 6/mmm (73); [2] 6/mcc (74) |