title: (1S,5R)-1-(3,4-Dichloro-phen-yl)-3-oxa-bicyclo-[3.1.0]hexan-2-one.
abstract: The absolute structure has been determined by X-ray analysis for the title compound, C(11)H(8)Cl(2)O(2). The five-membered ring of the mol-ecule is best described as a flattened envelope conformation with the methyl-ene C atom located 0.208 (2) Å below the plane formed by the other four atoms. A weak intermolecular C-H⋯O hydrogen bond is present in the crystal structure.
authors.affiliation: Department of Chemistry, University of Oslo, P.O.Box 1033 Blindern, N-0315 Oslo, Norway.
authors.forename: Carl Henrik
authors.initials: CH
authors.lastname: Görbitz
authors.forename: Tore
authors.initials: T
authors.lastname: Hansen
authors.forename: Kristian
authors.initials: K
authors.lastname: Vestli