Site symmetry
From Online Dictionary of Crystallography
Revision as of 08:46, 20 November 2017 by BrianMcMahon (talk | contribs) (Tidied translations and corrected German and Spanish (U. Mueller))
Revision as of 08:46, 20 November 2017 by BrianMcMahon (talk | contribs) (Tidied translations and corrected German and Spanish (U. Mueller))
Symétrie ponctuelle, symétrie du site (Fr). Lagesymmetrie, Punktlagesymmetrie (Ge). Simmetria del sito, simmetria puntuale (It). 席対称性 (Ja). Simetría posicional, simetría del sitio (Sp).
Definition
The site-symmetry group (often called point symmetry) of a point is the finite group formed by the set of all symmetry operations of the space group of the crystal that leave that point invariant. It is isomorphic to a (proper or improper) subgroup of the point group to which the space group under consideration belongs. In general, the origin is a point of highest site symmetry.
See also
- Chapter 1.4.4.2 of International Tables for Crystallography, Volume A, 6th edition