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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.IT_number
Name:_space_group.IT_number
Aliases:
_space_group_IT_number
_symmetry.Int_Tables_number
_symmetry_Int_Tables_number
Definition:
The number as assigned in International Tables for Crystallography
Vol. A (2016), specifying the proper affine class (i.e. the
orientation-preserving affine class) of space groups
(crystallographic space-group type) to which the space group
belongs. This number defines the space-group type but not the
coordinate system in which it is expressed.
Reference: International Tables for Crystallography (2016). Volume A,
Space-group symmetry, edited by M. I. Aroyo, 6th ed.
Chichester: John Wiley & Sons.
Type: Integer
Units: none
The permitted range is 1 → 230
Category:
space_group
