Extinction rules for the group P4'/m'nc' (128.406)
Extinctions for general positions (produced by centrings):
   Primitive unit cell: No extinctions
Extinctions for special positions:
   (0 0 l)          ->      Extinction Rule/s: l any
   (h 0 0)          ->      Extinction rule/s:    h = 2n + 1
For h = 1 : I = 0 F = (Fx, 0, 0)
For h = 2 : I ≠ 0 F = (0, Fy, 0)
   (0 k 0)          ->      Extinction rule/s:    k = 2n + 1
For k = 1 : I = 0 F = (0, Fy, 0)
For k = 2 : I ≠ 0 F = (Fx, 0, 0)
   (h h 0)          ->      Extinction Rule/s: h any
   (h -h 0)          ->      Extinction Rule/s: h any
   (0 k l)          ->      No extra extinctions found
   (h 0 l)          ->      No extra extinctions found
   (h k 0)          ->      No extra extinctions found
   (h -h l)          ->      No extra extinctions found
   (h h l)          ->      No extra extinctions found
Go to the operators of 128.406 (P4'/m'nc')
Go to the Wyckoff Positions of 128.406 (P4'/m'nc')