Restraints CIF dictionary version 1.0 released

Brian McMahon bm at
Tue Mar 8 16:58:30 GMT 2011

Version 1.0 of the restraints CIF dictionary, created by David Brown and
Ilia Guzei as an extension to the core CIF dictionary, has been posted
on the IUCr web site in ASCII, html and PDF formatted versions at
The dictionary file is available directly by anonymous ftp as

The items in this dictionary are designed for reporting the restraints
and constraints applied during the final refinement of a structure. They
are, however, not intended, nor are they suitable, for use as instructions
to a refinement program.

Brian McMahon
Coordinating Secretary, COMCIFS
Brian McMahon                                       tel: +44 1244 342878
Research and Development Officer                    fax: +44 1244 314888
International Union of Crystallography            e-mail:  bm at
5 Abbey Square, Chester CH1 2HU, England

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