InternationalReciprocal spaceTables for Crystallography Volume B Edited by U. Shmueli © International Union of Crystallography 2010 |
International Tables for Crystallography (2010). Vol. B, ch. 4.6, p. 603
## Section 4.6.3.2.1. Indexing |

The indexing of diffraction patterns of composite structures can be performed in the following way:

The vectors forming a basis for the 3D Fourier module can be chosen such that , and are linearly independent. Then the remaining *d* vectors can be described as a linear combination of the first three, defining the matrix σ: . This is formally equivalent to the reciprocal basis obtained for an IMS (see Section 4.6.3.1) and one can proceed in an analogous way to that for IMSs.