[script p]1121/m 2/m Monoclinic/Rectangular
No. 12 [script p]1121/m Patterson symmetry [script p]112/m

symmetry group diagram

Origin at -1 on 21

Asymmetric unit 0 ≤ z ≤ 1/4

Symmetry operations

(1)  1   (2)  2(1/2)   0, 0, z(3)  -1   0, 0, 0(4)  m   x, y, 1/4

Generators selected (1); t(0, 0, 1); (2); (3)

Positions

Multiplicity, Wyckoff letter,
Site symmetry		 Coordinates Reflection conditions
 General:
4 c 1
(1) x, y, z(2) -x, -y, z + 1/2(3) -x, -y, -z(4) x, y, -z + 1/2
l: l = 2n
  Special: no extra conditions
2 b  m 
x, y, 1/4-x, -y, 3/4
2 a  -1 
0, 0, 00, 0, 1/2

Symmetry of special projections

Along [001]   211

Origin at 0, 0, z 		Along [100]   [script p]2mg
a' = c   
Origin at x, 0, 0 		Along [010]   [script p]2mg
a' = c   
Origin at 0, y, 0

Maximal non-isotypic non-enantiomorphic subgroups

I[2] [script p]11m (10)1; 4
 [2] [script p]1121 (9)1; 2
 [2] [script p]-1 (2)1; 3
IIa none
IIbnone

Maximal isotypic subgroups and enantiomorphic subgroups of lowest index

IIc[3] [script p]1121/m (c' = 3c) (12)

Minimal non-isotypic non-enantiomorphic supergroups

I[2] [script p]mcm (22); [3] [script p]63/m (61)
II[2] [script p]112/m (c' = 1/2c) (11)








































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