8-Hydroxy-8-phenyl-2,3,7,8-tetrahydro-6H-1,4-dioxino[2,3-f]isoindol-6-one

Abstract

In the title compound, C16H13NO4, the indole system is essentially planar, whereas the dioxane ring adopts a twist conformation. The molecules are linked into chains by —O— H...O=C— hydrogen bonds and these chains are linked into rods by means of N—H...O hydrogen bonds. Exept for weak C—H...O interactions between the rods, no other intermolecular contacts of interest are present.