​​The Cambridge Crystallographic Data Centre (CCDC).
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What is a CIF?

Solution

​CIF (Crystallographic Information File) is a standard means of information interchange in crystallography, sponsored by the International Union of Crystallography (IUCr). For the original paper describing the CIF standard please see:

  • The Crystallographic Information File (CIF): a New Standard Archive File for Crystallography, S. R. Hall, F. H. Allen and I. D. Brown.
    Acta Cryst. (1991). A47, 655-685. doi:10.1107/S010876739101067X

More information is available from the IUCr