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Extinction rules for the group P_I4_22_12 (94.134)




Extinctions for general positions (produced by centrings):

   (h k l)     ->      Extinction rule/s:    h + k + l = 2n
    For  h = 1, k = 1, l = 1 :      I ≠ 0       F = (Fx, Fy, Fz)
    For  h = 1, k = 1, l = 2 :      I = 0       F = (0, 0, 0)
    For  h = 1, k = 2, l = 1 :      I = 0       F = (0, 0, 0)
    For  h = 1, k = 2, l = 2 :      I ≠ 0       F = (Fx, Fy, Fz)
    For  h = 2, k = 1, l = 1 :      I = 0       F = (0, 0, 0)
    For  h = 2, k = 1, l = 2 :      I ≠ 0       F = (Fx, Fy, Fz)
    For  h = 2, k = 2, l = 1 :      I ≠ 0       F = (Fx, Fy, Fz)
    For  h = 2, k = 2, l = 2 :      I = 0       F = (0, 0, 0)


Extinctions for special positions:

   (0 0 l)          ->      Extinction Rule/s: l any

   (h 0 0)          ->      No extra extinctions found

   (0 k 0)          ->      No extra extinctions found

   (h h 0)          ->      Extinction Rule/s: h any

   (h -h 0)          ->      Extinction Rule/s: h any





Go to the operators of 94.134 (PI42212)
Go to the Wyckoff Positions of 94.134 (PI42212)



Back to the list of magnetic space groups derived from I422
Back to the list of Magnetic Space Groups

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