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Figure 7
Observed and calculated powder patterns for recrystallized samples of 1,2-CHD. (a) The observed pattern of the cis isomer as fit by the one known phase (space group Pbca). (b) The observed pattern of the compound of the R,R and S,S enantiomers as fit by a combination of its two known racemic polymorphs. The peaks for the C2/c polymorph have been inverted to facilitate comparisons. (c) The observed pattern for samples recrystallized from a solution equimolar in the cis and rac isomers as fit by the three phases shown in parts (a) and (b) of the figure. The peaks for the rac polymorphs have been inverted to facilitate comparisons. We find no evidence for the presence of a significant amount of any other phase.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 63| Part 3| May 2007| Pages 433-447
doi:10.1107/S0108768107010579
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