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Item _space_group.centring_type


Description 

              Symbol for the lattice centring.  This symbol may be dependent
               on the coordinate system chosen.

Category

space_group

Mandatory Code

no

Data Type Code

char

Enumeration Values

Item Value Description
P primitive no centring
A a face centred (0,1/2,1/2)
B b face centred (1/2,0,1/2)
C c face centred (1/2,1/2,0)
F all faces centred (0,1/2,1/2),(1/2,0,1/2),(1/2,1/2,0)
I body centred (1/2,1/2,1/2)
R rhombohedral obverse centred (2/3,1/3,1/3),(1/3,2/3,2/3)
Rrev rhombohedral reverse centred (1/3,2/3,1/3),(2/3,1/3,2/3)
H hexagonal centred (2/3,1/3,0),(1/3,2/3,0)

 

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