Substructure

From Online Dictionary of Crystallography

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*[http://scripts.iucr.org/cgi-bin/paper?S1600576719000463 The confusion between lattice and structure explained]
*[http://scripts.iucr.org/cgi-bin/paper?S1600576719000463 The confusion between lattice and structure explained]
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[[Category:Crystal chemistry]]
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[[Category:Fundamental crystallography]]

Latest revision as of 09:24, 17 February 2019

Sous-structure (Fr). Sottostruttura (It). 部分構造 (Ja).


A crystal structure is composed by a finite number N of crystallographic orbits. When N > 1, a subset N’ (1 ≤ N’ < N) of the crystallographic orbits of S defines a substructure.

In chemistry and material science literature a substructure is often but incorrectly called a sublattice. A lattice is a mathematical description of the periodicity of a crystal structure and does not possess atomic nature. Furthermore, the translation lattice built on the subset of atoms defining a substructure can either coincide with the lattice of the original structure or be a superlattice of it, but never a sublattice.


See also