cmmRectangularinfo
No. 5c1m1Patterson symmetry c2mm

symmetry group diagram

Origin on m

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

Symmetry operations

For (0, 0)+ set

(1)  1   (2)  m   0, y

For (1/2, 1/2)+ set

(1)  t(1/2, 1/2)   (2)  b   1/4, y

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

Positions

Multiplicity, Wyckoff letter,
Site symmetry		CoordinatesReflection conditions
 (0,  0)+  (1/2,  1/2)+  General:
4b1
(1) x, y(2) -x, y 
hk: h + k = 2n
h0: h = 2n
0k: k = 2n
  Special: as above, plus
2a . m . 
0, y
no extra conditions








































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