Crystal polymorphism

In crystallography, polymorphism is the phenomenon where a compound or element can crystallize into more than one crystal structure.

The preceding definition has evolved over many years and is still under discussion today.^[1]^[2]^[3] Discussion of the defining characteristics of polymorphism involves distinguishing among types of transitions and structural changes occurring in polymorphism versus those in other phenomena.

^ Bernstein, Joel (2002). Polymorphism in Molecular Crystals. New York, USA: Oxford University Press. pp. 1–27. ISBN 0198506058.
^ Brog, Jean-Pierre; Chanez, Claire-Lise; Crochet, Aurelien; Fromm, Katharina M. (2013). "Polymorphism, what it is and how to identify it: a systematic review". RSC Advances. 3 (38): 16905–31. Bibcode:2013RSCAd...316905B. doi:10.1039/c3ra41559g.
^ Cruz-Cabeza, Aurora J.; Reutzel-Edens, Susan M.; Bernstein, Joel (2015). "Facts and fictions about polymorphism". Chemical Society Reviews. 44 (23): 8619–8635. doi:10.1039/c5cs00227c. PMID 26400501 – via MEDLINE.

[:6-1] Bernstein, Joel (2002). Polymorphism in Molecular Crystals. New York, USA: Oxford University Press. pp. 1–27. ISBN 0198506058.

[:7-2] Brog, Jean-Pierre; Chanez, Claire-Lise; Crochet, Aurelien; Fromm, Katharina M. (2013). "Polymorphism, what it is and how to identify it: a systematic review". RSC Advances. 3 (38): 16905–31. Bibcode:2013RSCAd...316905B. doi:10.1039/c3ra41559g.

[3] Cruz-Cabeza, Aurora J.; Reutzel-Edens, Susan M.; Bernstein, Joel (2015). "Facts and fictions about polymorphism". Chemical Society Reviews. 44 (23): 8619–8635. doi:10.1039/c5cs00227c. PMID 26400501 – via MEDLINE.

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