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4,4‐Diphenyl‐2,5‐cyclohexadienone: Four Polymorphs and Nineteen Crystallographically Independent Molecular Conformations
Author(s) -
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.
Publication year - 2002
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20021018)41:20<3848::aid-anie3848>3.0.co;2-l
Subject(s) - geminal , polymorphism (computer science) , chemistry , isomorphism (crystallography) , crystallography , crystal structure , molecule , stereochemistry , organic chemistry , biochemistry , genotype , gene
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.