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Article: Data on crystallography detailed by researchers at University of Kentucky.

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Journal of Technology
Article date:
November 3, 2009
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"On crystallization from CHCl3, CCl4, CH2ClCH2Cl and CHCl2-CHCl2, 6-chloro-5-hydroxy-2-pyridone, C5H4ClNO2, ( I), undergoes a tautomeric rearrangement to 6-chloro-2,5-dihydroxypyridine, (II). The resulting crystals, viz. 6-chloro-2,5-dihydroxypyridine chloroform 0.125-solvate, C5H4ClNO2 center dot 0.125CHCl(3), (IIa), 6-chloro-2,5-dihydroxypyridine carbon tetrachloride 0.125-solvate, C5H4ClNO2 center dot 0.125CCl(4), (IIb), 6-chloro-2,5-dihydroxypyridine 1,2-dichloroethane solvate, C5H4ClNO2 center dot C2H4Cl2, (IIc), and 6-chloro-2,5-dihydroxypyridine 1,1,2,2-tetrachloroethane solvate, C5H4ClNO2 center dot C2H2Cl4, (IId), have I4(1)/a symmetry, and incorporate ...

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