This is an archive copy of the IUCr web site dating from 2008. For current content please visit https://www.iucr.org.
[IUCr Home Page] [CIF logo]

CIF Specification

Important note of change to the CIF standard specification: As of release 2 of the Core CIF dictionary, data names may be greater than 32 characters in length. See the differences file on the Core CIF page for details.


Copyright © International Union of Crystallography
IUCr Webmaster