Restraints dictionaryThe restraints CIF dictionary is a supplement to the Core dictionary allowing the description of restraints or constraints applied in least-squares refinement of crystal structures.
Current official release
Ongoing development of the restraints dictionary using the DDLm dictionary definition language can be viewed on GitHub.
- Restraints CIF dictionary (DDLm version)
- Restraints CIF dictionary (legacy DDL1 version to track changes since the last official release)
Last updated 23 June 2022