Crystallographic Information Framework

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Core dictionary (coreCIF) version 2.4.5




   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. This 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. Special characteristics
   of the reflections included in the _refln_ list should be given
   in the item _reflns_special_details.

The permitted range is 0 -> infinity

Related item: _reflns_number_observed (alternate)

Type: numb

Category: reflns