# Difference between revisions of "D centred cell"

### From Online Dictionary of Crystallography

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*[[Centred lattices]] | *[[Centred lattices]] | ||

*[[H centred cell]] | *[[H centred cell]] | ||

− | *Section | + | *Section 1.5.3.1 in the ''International Tables for Crystallography'', Volume A, 6<sup>th</sup> edition |

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[[Category:Fundamental crystallography]] | [[Category:Fundamental crystallography]] |

## Revision as of 15:28, 10 April 2017

Maille centrée D (*Fr*); Cella centrata D (*It*); D 複合単位胞 (*Ja*).

The **D centred cell** is used for the rhombohedral description of the hexagonal lattice. Six right-handed *D* cells with basis vectors of equal length are obtained from the *hP* cell by means of one of the following transformation matrices:

*D*_{1}: 10-1/01-1/111 *D*_{2}: -101/0-11/111

the other four *D* cells are obtained by cyclic permutation of the basis vectors.

The resulting *hD* cell has centring nodes at 1/3,1/3,1/3 and 2/3,2/3,2/3

## See also

- Centred lattices
- H centred cell
- Section 1.5.3.1 in the
*International Tables for Crystallography*, Volume A, 6^{th}edition