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Communication
Chem. Commun., 2006, 4918 - 4920, DOI: 10.1039/b610323e
Polymorphs of 1,1-bis(4-hydroxyphenyl)cyclohexane and multiple Z
crystal structures by melt and sublimation crystallizationBipul Sarma, Saikat Roy and Ashwini Nangia
Close packing conflict in a metastable polymorph of the pure title host (Z
= 2, melt crystal 1m) is resolved in the stable form (Z = 1, sublimed crystal 1s) as O–H
O hydrogen bond changes to O–H
interaction. Melt crystallization and sublimation show a greater percentage of high Z structures in CSD statistics.
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