Definition:
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 Volume A, Section 2.2.12).
Ref: International Tables for Crystallography (2002). Volume A,
Space-group symmetry, edited by Th. Hahn, 5th ed.
Dordrecht: Kluwer Academic Publishers.
Examples:| 2.22 | position 2b in space group No. 94, P 42 21 2 |
| 42.2 | position 6b in space group No. 222, P n -3 n |
| 2.. | Site symmetry for the Wyckoff position 96f in space group No. 228, F d -3 c. The site-symmetry group is isomorphic to the point group 2 with the twofold axis along one of the {100} directions. |
Type: char
Mandatory item: no
Category: space_group_Wyckoff
Copyright © 2005 International Union of Crystallography