CIF (.cif)


    MIME type: chemical/x-cif
    3D molecular model file.
    Used in cheminformatics applications and on the web for storing and exchanging molecule models.
    CIF is an acronym for Crystallographic Information File and Crystallographic Information Framework.
    Plain text format.
    Extensible self-describing format.
    Developed in 1991 by the International Union of Crystallography.

Import and Export

  • Import["file.cif"] reads a CIF file and returns its contents as a list of rules.
  • Import["file.cif",elem] imports the specified element from a CIF file.
  • Import["file.cif",{{elem1,elem2,}}] imports multiple elements.
  • The import format can be specified with Import["file","CIF"] or Import["file",{"CIF",elem,}].
  • See the reference pages for full general information on Import.
  • ImportString supports the CIF format.


  • General Import elements:
  • "Elements"list of elements and options available in this file
    "Rules"full list of rules for each element and option
    "Options"list of rules for options, properties, and settings
  • Data representation elements:
  • "Data"numerical and textual data, given as a list of rules
    "Comments"user comments as a list of strings
  • Import uses the "Data" element by default for the CIF format.


Basic Examples  (1)

Import a CIF file:

Click for copyable input

See Also

"FASTA"  "GenBank"  "MMCIF"  "MOL"  "MOL2"  "PDB"  "SDF"  "SMILES"  "XYZ"

Introduced in 2008