Origin on 2

Asymmetric unit

0 ≤ x ≤ 1; 0 ≤ y ≤ 1/2

(1)  1

(2)  2   x, 0, 0

Generators selected (1); t(1, 0, 0); t(0, 1, 0); (2)

Positions

Multiplicity, Wyckoff letter, Site symmetry	Coordinates	Reflection conditions
		General:
2 c 1	(1) x, y, z (2) x, -y, -z	no conditions

		Special: no extra conditions
1 b  2	x, 1/2, 0
1 a  2	x, 0, 0

Symmetry of special projections

Along [001]   p1m1 a' = bp   b' = -a    Origin at 0, 0, z

Along [100]   211 a' = b    Origin at x, 0, 0

Along [010]   11m a' = a    Origin at 0, y, 0

Maximal non-isotypic subgroups

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I

[2] p1 (1)

1

IIa

none

IIb	[2] c211 (a' = 2a, b' = 2b) (10); [2] p2111 (a' = 2a) (9)

Maximal isotypic subgroups of lowest index

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IIc	[2] p211 (a' = 2a) (8); [2] p211 (b' = 2b) (8)

Minimal non-isotypic supergroups

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I	[2] p2/m11 (14); [2] p2/b11 (16); [2] p222 (19); [2] p2122 (20); [2] pm2m (27); [2] pb2b (30); [2] pm2a (31); [2] pb2n (34)

II	[2] c211 (10)

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