title: 8-Hydr-oxy-8-phenyl-2,3,7,8-tetra-hydro-6H-1,4-dioxino[2,3-f]isoindol-6-one.
abstract: In the title compound, C(16)H(13)NO(4), the indole system is essentially planar, whereas the dioxane ring adopts a twist conformation. The mol-ecules 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 inter-actions between the rods, no other inter-molecular contacts of inter-est are present.
authors.affiliation: Chemistry Department, Moscow State University, 119991 Moscow, Russian Federation.
authors.forename: Viktor A
authors.initials: VA
authors.lastname: Tafeenko
authors.forename: Leonid A
authors.initials: LA
authors.lastname: Aslanov
authors.forename: Mahmud I
authors.initials: MI
authors.lastname: Khasanov
authors.forename: Sergei S
authors.initials: SS
authors.lastname: Mochalov