Figure 2
A projection diagram, normal to the (h00) family of planes, showing the packing and C5—H5⋯O8 hydrogen bonding (dashed lines) between the cis,cis dimers and acetone solvent molecules in (IV). Only those molecules intersecting with the h = 2 or (200) plane are shown. All other H atoms and the h = 1 or (100) plane populated solely by urea molecules have been omitted for clarity. Displacement ellipsoids are drawn at the 50% probability level. |