p4 4 Squareinfo
No. 10 p4 Patterson symmetry p4

symmetry group diagram

Origin at 4

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

Symmetry operations

(1)  1   (2)  2   0, 0(3)  4+   0, 0(4)  4-   0, 0

Generators selected (1); t(1, 0); t(0, 1); (2); (3)

Positions

Multiplicity, Wyckoff letter,
Site symmetry
Coordinates Reflection conditions

 General:
4 d 1
(1) xy(2) -x-y(3) -yx(4) y-x
no conditions
    Special: as above, plus
2 c  2 . . 
1/2, 0 0, 1/2
hk: h + k = 2n
1 b  4 . . 
1/21/2
no extra conditions
1 a  4 . . 
0, 0
no extra conditions








































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