This is an archive copy of the IUCr web site dating from 2008. For current content please visit https://www.iucr.org.

Modulated Structures CIF Dictionary version 1.0

_cell_wave_vector_[ms]

Name

'_cell_wave_vector_[ms]'

Category: category_overview

Data type: null

Examples:

     loop_
         _cell_wave_vector_seq_id
         _cell_wave_vector_x
                1       0.318(5)

Example 1 - example corresponding to the one-dimensional incommensurately modulated structure of K~2~SeO~4~.

Definition

    	
   Data items in the CELL_WAVE_VECTOR category list the
   independent modulation wave vectors q~i~. The diffraction
   vectors are indexed in the form
   ha*+kb*+lc*+sum~i~ (m~i~q~i~). sum~i~ is taken
   over all wave vectors. In this version of the dictionary the
   index i has been restricted to be less than 9.

IUCr Webmaster