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Modulated and composite structures dictionary (msCIF) version 1.0.1

_space_group_symop_ssg_operation_algebraic

Name:
'_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.

Example:

x1,-x2,x3,1/2+x4

Appears in list containing _space_group_symop_ssg_id

Type: char

Category: space_group_symop