International
Tables for
Crystallography
Volume G
Definition and exchange of crystallographic data
Edited by J. R. Hester and B. McMahon

International Tables for Crystallography (2026). Vol. G. Early view chapter
https://doi.org/10.1107/97809553602060001011

Chapter 4.2 Core dictionary (coreCIF)


Index

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








































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