_cell.reciprocal_basis_description

Name:
_cell.reciprocal_basis_description

Alias:
_cell_reciprocal_basis_description

Definition:

   

      Definition of the higher-dimensional basis with respect to which
      the Miller indices are defined. The three-dimensional basis used
      to index the additional wave vectors should be clearly indicated.

Examples:

;         a*,b*,c* (reciprocal basis spanning the lattice of main
          reflections) and q (incommensurate with respect to a*,b*,c*)
;

Typical choice for a one-dimensional incommensurate structure.

;         The diffraction pattern can be indexed with four integers based
          on the reciprocal vectors a*~1~=a*~11~, a*~2~=a*~12~,
          a*~3~=a*~13~, a*~4~=a*~21~. a*~1j~ (j=1,2,3) index the
          main reflections of the 1st subsystem. a*~21~ is incommensurate
          with a*~11~.
;

Common choice for a misfit layer compound composed of two subsystems that have in common two reciprocal vectors. Extracted from van Smaalen [Crystallogr. Rev. (1995), 4, 79-202].

Type: Text

Category:
cell

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Crystallographic Information Framework

Modulated structures dictionary (msCIF) version 3.2.1

_cell.reciprocal_basis_description

International Tables for Crystallography

Volume G: Definition and exchange of crystallographic data

Edited by S. R. Hall and B. McMahon

IUCrData