title: Crystal structure of 2-hy-droxy-2-(2-oxo-cyclo-hept-yl)-2,3-di-hydro-1H-indene-1,3-dione.
abstract: In the title compound, C16H16O4, the five-membered ring of the indene-1,3-dione unit adopts a twist conformation, whereas the seven-membered ring adopts a twist-chair conformation. In the crystal, mol-ecules are linked by O-H⋯O hydrogen bonds, weak C-H⋯O hydrogen bonds and π-π stacking [centroid-to-centroid distance = 3.7373 (8) Å] into a three-dimensional supra-molecular architecture.
authors.affiliation: Department of Physics, Dr. Zakir Husain College, Ilayankudi, Sivagangai District 625 009, India.
authors.forename: P Kaleel
authors.initials: PK
authors.lastname: Ahamed
authors.affiliation: Department of Physics, Thiagarajar College, Madurai 625 009, India.
authors.forename: N
authors.initials: N
authors.lastname: Srinivasan
authors.affiliation: School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India.
authors.forename: R
authors.initials: R
authors.lastname: Ranjith Kumar
authors.affiliation: Department of Physics, Thiagarajar College, Madurai 625 009, India.
authors.forename: R V
authors.initials: RV
authors.lastname: Krishnakumar
keywords: crystal structure; hydrogen bonding; indene-1,3-dione; π–π stacking