pm11 m Monoclinic/Rectangular
No. 11 pm11 Patterson symmetry p2/m11

symmetry group diagram

Origin on mirror plane m

Asymmetric unit 0 ≤ x ≤ 1/2; 0 ≤ y ≤ 1

Symmetry operations

(1)  1
      (1 | 0, 0, 0)
(2)  m   0, yz
      (mx | 0, 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) xyz (2) -xyz
no conditions
    Special: no extra conditions
1 b  m 
1/2yz
1 a  m 
0, yz

Symmetry of special projections

Along [001]   p1m1
a' = a   b' = bp   
Origin at 0, 0, z
Along [100]   [script p]111
a' = b   
Origin at x, 0, 0
Along [010]   [script p]1m1
a' = a   
Origin at 0, y, 0

Maximal non-isotypic subgroups


I [2] p1 (1) 1
IIa none
IIb [2] cm11 (a' = 2ab' = 2b) (13); [2] pb11 (b' = 2b) (12)

Maximal isotypic subgroups of lowest index


IIc [2] pm11 (a' = 2a) (11); [2] pm11 (b' = 2b) (11)

Minimal non-isotypic supergroups


I [2] p2/m11 (14); [2] p21/m11 (15); [2] pmm2 (23); [2] pma2 (24); [2] pm2m (27); [2] pm21b (28); [2] pm2a (31); [2] pm21n (32)
II [2] cm11 (13)








































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