Hydrogen bonds and C-H...O interactions in the enol tautomer of 4-(phenylsulfonyl)spiro[cyclopentane-1,9'-[9H]fluorene]-2,3-dione.

Abstract

The title compound, 2-hydroxy-1-(phenyl­sulfonyl)­spiro­[cyclo­pentene-4,9′-[9H]­fluoren]-3-one, C23H16O4S, crystallized in the centrosymmetric space group P21/n with one mol­ecule as the asymmetric unit. The hydroxyl-H atom is ordered and participates in a single intramolecular hydrogen bond and in a single intermolecular hydrogen bond, in which the OD—H distance is 0.90 (2), H⋯OA is 2.34 (3), OD⋯OA is 2.987 (2) A and OD—H⋯OA is 129 (2)°. The intermolecular hydrogen bond forms an R{_2^2}(12) cyclic dimer about a center of symmetry. There are six leading C—H⋯O interactions. Taken together, these interactions form a three-dimensional network. Structural comparisons are made with tetrabenzodi­spiro­[4.0.4.3]­tridecatetraene.