Acta Cryst. (2004). C60, o50-o53 [doi:10.1107/S0108270103022716]
Abstract: The crystal structures of three 1:2 inclusion compounds that consist of host molecule 2,5-diphenylhydroquinone (C18H14O2) and the guest molecules 2-pyridone (C5H5NO), 1,3-diphenyl-2-propen-1-one (chalcone, C15H12O) and 1-(4-methoxyphenyl)-3-phenyl-2-propen-1-one (4'-methoxychalcone, C16H14O2) were determined in order to study the ability of guest molecules in inclusion compounds to undergo photoreaction. All of the crystals were found to be photoresistant. The three inclusion compounds crystallize in triclinic space group 
. In each case, the host/guest ratio is 1:2, with the host molecules occupying crystallographic centers of symmetry and the guest molecules occupying general positions. The guest molecules in each of the inclusion compounds are linked to the host molecules by hydrogen bonds. In the inclusion compound where the guest molecule is pyridone, the host molecule is disordered so that the hydroxy groups are distributed between two different sites, with occupancies of 0.738 (3) and 0.262 (3). The pyridone molecules form dimers via N-H
O hydrogen bonds.
Formula: C18H14O2·2C5H5NO, C18H14O2·2C15H12O and C18H14O2·2C16H14O2
Online 6 December 2003
 |   Structure factor file (CIF format) (99.4 kbytes) |
| Structure factor file (CIF format) (154.7 kbytes) |
| Structure factor file (CIF format) (342.0 kbytes) |
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