organic compounds
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The molecule of the title compound, C16H11BrO3, is essentially planar with a maximum deviation of 0.178 (4) Å and the configuration of the keto group with respect to the olefinic double bond is typically s-cis. In the crystal structure, intermolecular BrO interactions [3.187 (3)Å] give rise to chains parallel to the b axis. Adjacent chains are further linked along the a axis by C—Hπ interactions. The crystal studied was a racemic twin with a 0.595 (13):0.405 (13) ratio.