Wyckoff Positions of Space Groups

Wyckoff Positions of Group 51 (P m m a)

Multiplicity

Wyckoff
letter

Site
symmetry

Coordinates

8

l

1

(x, y, z)	( - x + 1/2, - y, z)	( - x, y, - z)	(x + 1/2, - y, - z)
( - x, - y, - z)	(x + 1/2, y, - z)	(x, - y, z)	( - x + 1/2, y, z)

4

k

m..

(1/4, y, z)

(1/4, - y, z)

(3/4, y, - z)

(3/4, - y, - z)

4

j

.m.

(x, 1/2, z)

( - x + 1/2, 1/2, z)

( - x, 1/2, - z)

(x + 1/2, 1/2, - z)

4

i

.m.

(x, 0, z)

( - x + 1/2, 0, z)

( - x, 0, - z)

(x + 1/2, 0, - z)

4

h

.2.

(0, y, 1/2)

(1/2, - y, 1/2)

(0, - y, 1/2)

(1/2, y, 1/2)

4

g

.2.

(0, y, 0)

(1/2, - y, 0)

(0, - y, 0)

(1/2, y, 0)

2

f

mm2

(1/4, 1/2, z)

(3/4, 1/2, - z)

2

e

mm2

(1/4, 0, z)

(3/4, 0, - z)

2

d

.2/m.

(0, 1/2, 1/2)

(1/2, 1/2, 1/2)

2

c

.2/m.

(0, 0, 1/2)

(1/2, 0, 1/2)

2

b

.2/m.

(0, 1/2, 0)

(1/2, 1/2, 0)

2

a

.2/m.

(0, 0, 0)

(1/2, 0, 0)

If you want to see the Wyckoff position in other setting, click here

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