Describes CIF, the data exchange standard of crystallography. Provides: information for scientists who wish to record or use the results of a single-crystal or powder diffraction experiment; the data ontology necessary for designing interoperable computer applications; accompanying software including machine-readable CIF dictionaries, libraries and utility programs.
An essential guide and reference to CIF for programmers, data managers handling crystal-structure information and practising crystallographers.
Density values calculated from the crystal cell and contents. The units are megagrams per cubic metre (grams per cubic centimetre).
May appear in list containing _exptl_crystal_id
The permitted range is 0.0 -> infinity