Index

Modulated structures dictionary (msCIF) version 3.2.1

_space_group_symop.ssg_operation_algebraic

Definition:

   

      A parsable string giving one of the symmetry operations of the
      superspace group in algebraic form. These data will generally be
      repeated in a loop. Use symbols as necessary according to
      _cell_modulation_dimension.
      All symmetry operations should be entered, including the
      identity operation, those for lattice centring and that for
      a centre of symmetry, if present. The symbolic notation for
      coordinates is such that the identity operation is expressed
      as x1,x2,x3,...,xn.

      _space_group_symop_ssg_operation_algebraic must always be present
      in a CIF corresponding to a modulated structure.

Type: Code

Category:
space_group_symop