[script p]1m1 m Rectangular
No. 3 [script p]1m1 Patterson symmetry [script p]2mm

symmetry group diagram

Origin on m

Asymmetric unit 0 ≤ x1/2

Symmetry operations

(1)  1
      (1 | 0, 0)
(2)  m   0, y
      (mx | 0, 0)
  

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

Positions

Multiplicity, Wyckoff letter,
Site symmetry
Coordinates Reflection conditions

 General:
2 c 1
(1) xy(2) -xy
no conditions
    Special: no extra conditions
1 b . m .
1/2y
1 a . m .
0, y

Symmetry of special projections

Along [10]   1

Origin at x, 0
Along [01]   [script p]m
a' = a   
Origin at 0, y

Maximal non-isotypic subgroups


I[2] [script p]1 (1)1
IIa none
IIbnone

Maximal isotypic subgroups of lowest index


IIc[2] [script p]1m1  (a' = 2a) (3)

Minimal non-isotypic supergroups


I[2] [script p]2mm (6); [2] [script p]2mg (7)
IInone








































to end of page
to top of page