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organic compounds
The title compound, C30H26O2, has a conformation in which one of the cyclopropanecarbonyl moieties bisects the plane of the cyclopropene ring. The bulky 1,2,3-triphenylcyclopropenyl substituent in the α-position of the β-diketone excludes the possibility of any enolization process. The asymmetry of the single-bond lengths in substituted cyclopropenes, reported previously [Allen (1982). Tetrahedron, 38, 645–655], is not observed in the present compound.