2,6-Dibenzoyl-1,4-benzoquinone

In contrast to the stacking characteristic of quinones, the title compound, C₂₀H₁₂O₄, forms a two-dimensional network of C—H...O hydrogen bonds. The molecule has an unsymmetrical butterfly shape with the two benzoyl O atoms lying out of the plane of the quinonoid ring. The unusual conformation is a result of the crystal packing and the numerous weak hydrogen bonds.

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