Pna21 C2v9 mm2 Orthorhombic info
No. 33 Pna21 Patterson symmetry Pmmm

symmetry group diagram

Origin on 1 1 21

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

Symmetry operations

(1)  1   (2)  2(0, 0, 1/2)   0, 0, z(3)  a   x1/4z(4)  n(0, 1/21/2)   1/4yz

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

Positions

Multiplicity, Wyckoff letter,
Site symmetry
Coordinates Reflection conditions
 General:
4 a 1
(1) xyz(2) -x-yz + 1/2(3) x + 1/2-y + 1/2z(4) -x + 1/2y + 1/2z + 1/2
0kl: k + l = 2n
h0l: h = 2n
h00: h = 2n
0k0: k = 2n
00l: l = 2n

Symmetry of special projections

Along [001]   p2gg
a' = a   b' = b   
Origin at 0, 0, z
Along [100]   c1m1
a' = b   b' = c   
Origin at x1/4, 0
Along [010]   p11g
a' = c   b' = 1/2a   
Origin at 0, y, 0








































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