title: Preparation and crystal structure of two bicyclo[1.1.0]butan-2-ones: a hybrid oxyallyl-cyclopropanone motif.
abstract: The first X-ray crystal structures of two different bicyclo[1.1.0]butanones show a very long transannular bond of 1.69 A and a large carbonyl pyramidal distortion of 0.26 A out of the plane of the three carbons. These features are those expected of molecules with a hybrid cyclopropanone-oxyallyl structure, and these structures differ markedly from those of the parent bicyclo[1.1.0]butane skeleton.
authors.affiliation: Department of Chemistry, University of Calgary, 2500 University Drive, Calgary, Alberta, T2N 1N4 Canada.
authors.forename: Surbhi
authors.initials: S
authors.lastname: Bhargava
authors.forename: Jianjun
authors.initials: J
authors.lastname: Hou
authors.forename: Masood
authors.initials: M
authors.lastname: Parvez
authors.forename: Ted S
authors.initials: TS
authors.lastname: Sorensen