Origin on mirror plane m

Asymmetric unit

0 ≤ x ≤ 1; 0 ≤ y ≤ 1; 0 ≤ z

(1)  1

(2)  m   x, y, 0

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

Positions

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

		Special: no extra conditions
1 a  m	x, y, 0

Symmetry of special projections

Along [001]   p1 a' = a   b' = b    Origin at 0, 0, z

Along [100]   11m a' = bp    Origin at x, 0, 0

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

Maximal non-isotypic subgroups

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I

[2] p1 (1)

1

IIa

none

IIb	[2] p11a (a' = 2a) (5); [2] p11b (b' = 2b) (p11a, 5); [2] c11a (a' = 2a, b' = 2b) (p11a, 5)

Maximal isotypic subgroups of lowest index

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IIc	[2] p11m (a' = 2a or b' = 2b or a' = a + b, b' = -a + b) (4)

Minimal non-isotypic supergroups

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I	[2] p112/m (6); [2] pm2m (27); [2] pb21m (29); [2] cm2m (35); [3] p-6 (74)

II

none

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