International
Tables for
Crystallography
Volume A
Space-group symmetry
Edited by Th. Hahn

International Tables for Crystallography (2006). Vol. A, ch. 4.2, p. 61

## Section 4.2.3. Multiple cells

E. F. Bertauta

aLaboratoire de Cristallographie, CNRS, Grenoble, France

### 4.2.3. Multiple cells

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The c cell in the square system is defined as follows: with centring points' at 0, 0; . It plays the same role as the three-dimensional C cell in the tetragonal system (cf. Section 4.3.4 ).

Likewise, the triple cell h in the hexagonal system is defined as follows: with centring points' at 0, 0; . It is the two-dimensional analogue of the three-dimensional H cell (cf. Chapter 1.2 and Section 4.3.5 ).