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- Systematic absences for Magnetic Space Groups
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Magnetic diffraction Systematic Absences for the group
Pmc2
1
(#26.66)
For this space group,
BNS and OG settings
coincide.
Its label in the OG setting is given as:
Pmc2
1
(#26.1.168)
Values of h, k, l:  
h integer, k integer, l integer
Systematic absences for special reflections:
Diffraction vector type:
(0 0 l)
-> Systematic absence:
l = 2n
For l = 1: I /= 0 F = (Fx,0,0)
For l = 2: I = 0 F = (0,0,0)
[Show form of structure factor for every type of reflection]
Go to the list of the General Positions of the Group
Pmc2
1
(#26.66) [OG:
Pmc2
1
(#26.1.168)]
Go to the list of the Wyckoff Positions of the Group
Pmc2
1
(#26.66) [OG:
Pmc2
1
(#26.1.168)]
[Show systematic absences in a different setting]
Introduce the new basis vectors of the reciprocal lattice:
a*'
=
a* +
b* +
c*
b*'
=
a* +
b* +
c*
c*'
=
a* +
b* +
c*
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