Data Item _space_group.name_H-M_full


Item name
Category name
Attribute name
Required in PDB entries
Used in currrent PDB entries

Item Description

The Full International Hermann-Mauguin space group symbol as defined in Section 2.3 and given as the second item of the second line of one of the Space Group Tables of Section 7 of International Tables for Crystallography Vol. A (1995). Each component of the space group name is separated by a space or an underscore. The use of 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 the *.IT_number or *.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 *.name_Hall, list the symmetry operations or generators, or give the transformation relating the setting used to the reference setting defined in this dictionary under *.reference_setting.

Item Example

 P 21/n 21/m 21/a

Data Type

Data type code
Data type detail
char item types / multi-word items ...
Primitive data type code
Regular expression
[][ \t_(),.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*


Alias Item Name Dictionary Name Dictionary Version
_symmetry.space_group_name_H-M cif_mm.dic 1.0.0