Polymorphs of 1,1-bis(4-hydroxyphenyl)cyclohexane and multiple Z' crystal structures by melt and sublimation crystallization |
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| Authors: | Sarma Bipul Roy Saikat Nangia Ashwini |
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| Institution: | School of Chemistry, University of Hyderabad, Hyderabad, 500 046, India. |
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| Abstract: | Close packing conflict in a metastable polymorph of the pure title host (Z' = 2, melt crystal m) is resolved in the stable form (Z' = 1, sublimed crystal s) as O-H...O hydrogen bond changes to O-H...pi interaction. Melt crystallization and sublimation show a greater percentage of high Z' structures in CSD statistics. |
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