# Difference between revisions of "Site symmetry"

### From Online Dictionary of Crystallography

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== Definition == | == Definition == | ||

− | The site-symmetry group 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. | + | 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 == | == See also == |

## Revision as of 06:49, 9 May 2006

Symétrie ponctuelle (*Fr*). Punktsymmetrie, Lagesymmetrie (*Ge*). Simetria punctual (*Sp*). Simmetria del sito, simmetria puntuale (*It*).

## 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

Sections 2.2.12 and 8.3.2 of *International Tables of Crystallography, Volume A*