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Core CIF Dictionary version 2.3




Category: reflns

Data type: numb

Related item: '_reflns_number_observed'
Related function: alternate

Enumeration range: 0 -> infinity


   The number of reflections in the _refln_ list (not the
   _diffrn_refln_ list) that are significantly intense, satisfying
   the criterion specified by _reflns_threshold_expression. It may
   include Friedel equivalent reflections (i.e. those which are
   symmetry equivalent under the Laue symmetry but inequivalent
   under the crystal class) according to the nature of the
   structure and the procedures used. The special characteristics
   of the reflections included in the _refln_ list should be given
   in the item _reflns_special_details.

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