International
Tables for
Crystallography
Volume G
Definition and exchange of crystallographic data
Edited by J. R. Hester and B. McMahon

International Tables for Crystallography (2026). Vol. G. Early view chapter
https://doi.org/10.1107/97809553602060001011

Chapter 4.2 Core dictionary (coreCIF)


Index

Core dictionary version 3.3.0

Category REFLNS

Name:
'REFLNS'

Parent category:
DIFFRACTION

Definition:

   
    Data items in the REFLNS category record details about the complete
    set of reflections used in the structure refinement process. Note that
    these parameters are often similar measures to those defined in the
    DIFFRN categories, but differ in that the parameters refer to the
    reduced/transformed reflections which have been used to refine the
    atom site data in the ATOM_SITE category. The DIFFRN definitions refer
    to the diffraction measurements and the raw reflection data.

    The REFLNS data items specify the parameters that apply to all
    reflections.

    (Data items in the REFLN category refer to individual reflections and must
    be included in looped lists.)

Category is of type Set








































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