Index

Core dictionary version 3.0.14

Category SPACE_GROUP

Parent category:
EXPTL

Definition:

   
     The CATEGORY of data items used to specify space group
     information about the crystal used in the diffraction measurements.
     
     Space-group types are identified by their number as listed in
     International Tables for Crystallography Volume A, or by their
     Schoenflies symbol. Specific settings of the space groups can
     be identified by their Hall symbol, by specifying their
     symmetry operations or generators, or by giving the
     transformation that relates the specific setting to the
     reference setting based on International Tables Volume A and
     stored in this dictionary.

     The commonly used Hermann-Mauguin symbol determines the
     space-group type uniquely but several different Hermann-Mauguin
     symbols may refer to the same space-group type. A
     Hermann-Mauguin symbol contains information on the choice of
     the basis, but not on the choice of origin.

     Ref: International Tables for Crystallography (2002). Volume A,
      Space-group symmetry, edited by Th. Hahn, 5th ed.
      Dordrecht: Kluwer Academic Publishers.

Category is of type Set