4,4-Diphenyl-2,5-cyclohexadienone: Four polymorphs and nineteen crystallographically independent molecular conformations
4,4-Diphenyl-2,5-cyclohexadienone: Four polymorphs and nineteen crystallographically independent molecular conformations
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Date
2002-10-18
Authors
Kumar, V. S.Senthil
Addlagatta, Anthony
Nangia, Ashwini
Robinson, Ward T.
Broder, Charlotte K.
Mondal, Raju
Evans, Ivana R.
Howard, Judith A.K.
Allen, Frank H.
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Volume Title
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Abstract
Small yet subtle conformational changes resulting from the correlated rotation of the geminal phenyl rings in the title compound lead to different crystal packing arrangements and thus different X-ray crystal structures (the four space groups are given in the picture). This provides the simultaneous occurence of conformational polymorphism, conformational isomorphism, and concomitant polymorphism for the same molecule.
Description
Keywords
Conformation analysis,
Hydrogen bonds,
Polymorphism,
Structure elucidation,
Supramolecular chemistry
Citation
Angewandte Chemie - International Edition. v.41(20)