Chapter 4.7 Symmetry dictionary (symCIF)

Definition and exchange of crystallographic data

First Online Edition (2006)

Part 4. Data dictionaries

  1. I. D. Brown

Published Online: 1 JAN 2006

DOI: 10.1107/97809553602060000747

International Tables for Crystallography

International Tables for Crystallography

How to Cite

Brown, I. D. 2006. Symmetry dictionary (symCIF). International Tables for Crystallography. G:4:4.7:459–466.

Author Information

  1. Brockhouse Institute for Materials Research, McMaster University, Hamilton, Ontario, Canada L8S 4M1

Publication History

  1. Published Online: 1 JAN 2006


This is version 1.0.1 of the symmetry CIF dictionary (symCIF). Use of this dictionary is described in Chapter 3.8. The data names defined here provide a more complete description of symmetry than the original core CIF dictionary (Chapter 4.1).


  • crystallography;
  • CIF;
  • CIF dictionaries;
  • Crystallographic Information File;
  • symCIF;
  • symmetry Crystallographic Information File;
  • data names;
  • data categories;
  • DDL2