Crystalline state are found to show different forms (polymorphs ). Amorphous solids may also exists in different forms. Can anyone would like to share information about these systems?
Hi Mr Singh,
Yes! both crystals and amorphous substances show polymorphism. Polymorphism is independent of nature of compound:it is the ability of a chemical component to exist in more than one form by various packing / conformations/ coordination / interaction etc.
Generally DSC can be the simplest and best way to characterize a polymorphic form; because
it is independent of type of compound whether it is crystal or amorphous...
for more details please refer to the book: CRYSTAL ENGINEERING by G. R. Desiraju, A. Ramanan, J. J. Vittal.
Thank you,
Archisman Dutta
The existence of polyamorphous forms is still controversial, but prof Lian Yu at Univ of Wisconsin has demonstrated it to exist in mannose and perhaps a couple of other compounds.
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