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Item _space_group_Wyckoff.site_symmetry

Description

              The subgroup of the space group that leaves the point fixed.
               It is isomorphic to a subgroup of the point group of the
               space group. The site symmetry symbol indicates the symmetry
               in the symmetry direction determined by the Hermann-Mauguin
               symbol of the space group (see International Tables for
               Crystallography Vol A Section 2.12).

Category

Item Examples

Example 1:

Position 2b in space group number 94, P 42 21 2

2.22

Example 2:

Position 6b in space group number 222, P n -3 n

42.2

Example 3:

              Site symmetry for the Wyckoff position 96f in space group 228,
               F d -3 c.  The site symmetry group is isomorphic to the point
               group 2 with the 2-fold axis along one of the {100} directions.

2..

Mandatory Code

Data Type Code

 

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