
Origin at 222
Asymmetric unit |
0 ≤ x ≤ 1/2; 0 ≤ y ≤ 1/2 |
(1) 1 |
(2) 2 0, 0, z |
(3) 2 0, y, 0 |
(4) 2 x, 0, 0 |
Generators selected (1); t(1, 0, 0); t(0, 1, 0); (2); (3)
Multiplicity, Wyckoff letter,
Site symmetry |
Coordinates |
Reflection conditions |
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General:
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(1) x, y, z |
(2) -x, -y, z |
(3) -x, y, -z |
(4) x, -y, -z |
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no conditions |
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Special: no extra conditions |
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Symmetry of special projections
Along [001] p2mm
a' = a b' = b
Origin at 0, 0, z |
Along [100] 2mm
a' = b
Origin at x, 0, 0 |
Along [010] 2mm
a' = a
Origin at 0, y, 0 |
Maximal non-isotypic subgroups
I |
[2] p121 (p211, 8) |
1; 3 |
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[2] p211 (8) |
1; 4 |
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[2] p112 (3) |
1; 2 |
IIb |
[2] c222 (a' = 2a, b' = 2b) (22); [2] p2212 (b' = 2b) (p2122, 20); [2] p2122 (a' = 2a) (20) |
Maximal isotypic subgroups of lowest index
IIc |
[2] p222 (a' = 2a or b' = 2b) (19) |
Minimal non-isotypic supergroups
I |
[2] pmmm (37); [2] pmaa (38); [2] pban (39); [2] p422 (53); [2] p-42m (57) |