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.
The maximum, medial and minimum dimensions in millimetres of the crystal. If the crystal is a sphere, then the *_rad item is its radius. If the crystal is a cylinder, then the *_rad item is its radius and the *_length item is its length. These may appear in a list with _exptl_crystal_id if multiple crystals are used in the experiment.
May appear in list containing _exptl_crystal_id
The permitted range is 0.0 -> infinity