|
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.name_H-M_full
Name:_space_group.name_H-M_full
Aliases:
_symmetry.space_group_name_H-M
_symmetry_space_group_name_H-M
Definition:
The full international Hermann-Mauguin space-group symbol as
defined in Section 2.1.3.3 of International Tables for
Crystallography Volume A (2016) and given as the second item of
the second line of each of the space-group tables of Chapter 2.3
of that volume.
Each component of the space-group name is separated by a
space or an underscore character. The use of a space is
strongly recommended. The underscore is only retained
because it was used in earlier archived files. It should not
be used in new CIFs.
Subscripts should appear without special symbols. Bars should
be given as negative signs before the numbers to which they
apply. The commonly used Hermann-Mauguin symbol determines the
space-group type uniquely, but a given space-group type may
be described by more than one Hermann-Mauguin symbol. The
space-group type is best described using
_space_group.IT_number or _space_group.name_Schoenflies. The
full international Hermann-Mauguin symbol contains information
about the choice of basis for monoclinic and orthorhombic
space groups, but does not give information about the choice
of origin. To define the setting uniquely use
_space_group.name_Hall, or list the symmetry operations
or generators.
Reference: International Tables for Crystallography (2016). Volume A,
Space-group symmetry, edited by M. I. Aroyo, 6th ed.
Chichester: John Wiley & Sons.
Example:| 'P 21/n 21/m 21/a' | Full symbol for Pnma. |
Type: Text
Category:
space_group