Modulated Structures CIF Dictionary version 1.0

_atom_site_displace_Fourier_axis

Name

Category: atom_site_displace_Fourier

Data type: char

Must appear in a looped list containing '_atom_site_displace_Fourier_id'

Permitted values:

x 'displacement along the a axis'
y 'displacement along the b axis'
z 'displacement along the c axis'
a1 'displacement along an arbitrary a1 axis'
a2 'displacement along an arbitrary a2 axis'
a3 'displacement along an arbitrary a3 axis'

Definition

    	

   A label identifying the displacement component of a given atom
   or rigid group that is being parameterized by Fourier series. a,
   b and c are the basic lattice vectors of the reference structure.
   For composites they refer to the reference structure of each
   subsystem. a1, a2 and a3 are defined by
   _atom_sites_displace_Fourier_axes_description.