Structural and spectroscopic study and intermolecular chalcogen bonding interactions in 1,3-dicarbonyl compounds.

Intra- and intermolecular contacts in 1,3-dicarbonyl compounds are dominated by O–H⋯O bonds. When molecules face each other, the unusual intermolecular O⋯O bonds can reinforce adjacent O–H⋯O bonds and form centrosymmetric dimers.