Core dictionary (coreCIF) version 2.4.5




   The code identifying the class to which this reflection has been
   assigned. This code must match a value of _reflns_class_code.
   Reflections may be grouped into classes for a variety of
   purposes. For example, for modulated structures each reflection
   class may be defined by the number m=sum|m~i~|, where the m~i~
   are the integer coefficients that, in addition to h,k,l, index
   the corresponding diffraction vector in the basis defined
   for the reciprocal lattice.

Appears in list containing _refln_index_

Must match data name_reflns_class_code

Type: char

Category: refln