organic compounds
The molecules of the title compound, C13H14O4, the condensation product of vanillin and acetylacetone, are hydrogen bonded into a linear chain arising from interaction between the hydroxy group of one molecule and the acetyl group of an adjacent molecule.
organic compounds
The title compound, C18H14O3, also known as 1,2-dihydrotanshinquinone, contains a four-ring system. No classical hydrogen bonds are found in the structure.
organic compounds
The molecules of the title compound, C16H12O4, are linked by hydrogen bonds involving the two hydroxy and carbonyl O atoms, forming a three-dimensional network.