cm m Rectangularinfo
No. 5 c1m1 Patterson 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 (1/21/2)+ set

(1)  t(1/21/2)   (2)  b   1/4y

Generators selected (1); t(1, 0); t(0, 1); t(1/21/2); (2)

Positions

Multiplicity, Wyckoff letter,
Site symmetry
Coordinates Reflection conditions

 (0,  0)+  (1/21/2)+  General:
4 b 1
(1) xy(2) -xy 
hk: h + k = 2n
h0: h = 2n
0k: k = 2n
    Special: as above, plus
2 a  . m . 
0, y
no extra conditions








































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