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International
Tables for Crystallography Volume G Definition and exchange of crystallographic data Edited by J. R. Hester and B. McMahon © International Union of Crystallography 2026 |
International Tables for Crystallography (2026). Vol. G. Early view chapter
https://doi.org/10.1107/97809553602060001011 Chapter 4.2 Core dictionary (coreCIF) |
Core dictionary version 3.3.0
_space_group.centring_type
Name:_space_group.centring_type
Definition:
Symbol for the lattice centring. This symbol may be dependent
on the coordinate system chosen.
Type: Text
The data value must be one of the following:
|
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) |
Category:
space_group
