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Unknowns in Chemical Company's Catalogs
1  Laboratoire des Fluorures, Universit√© du Maine, Avenue O. Messiaen, 72085 Le Mans cedex 9, France

Abstract: More explicit catalogs should be required from chemical companies. Chemists may have to search references in many databases before to decide to buy a product. For each solid state crystallized phase, the corresponding CSD, ICSD or PDB entry number should be given in catalogs, in addition to the generally provided CAS number. This would be a kind of proof that the compound has been somewhere submitted to the highest characterization level: a crystal structure determination. This would save considerable time and improve confidence in the sample quality. Powder diffraction has a key role to play in this process, if ever realized.
Keywords: Structure Databases, Chemical Company Catalogs, Unknown Crystal Structure.