Actions

Site symmetry

From Online Dictionary of Crystallography

Revision as of 14:02, 26 March 2019 by ShigeruOhba (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Symétrie ponctuelle, symétrie du site (Fr). Lagesymmetrie, Punktlagesymmetrie (Ge). Simmetria del sito, simmetria puntuale (It). 席対称 (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