pmmRectangularinfo
No. 3p1m1Patterson symmetry p2mm

symmetry group diagram

Origin on m

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

Symmetry operations

(1)  1   (2)  m   0, y

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

Positions

Multiplicity, Wyckoff letter,
Site symmetry		CoordinatesReflection conditions
 General:
2c1
(1) x, y(2) -x, y
no conditions
  Special: as above, plus
1b . m . 
1/2, y
no extra conditions
1a . m . 
0, y
no extra conditions








































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