title: Molecular beam rotational spectrum of cyclobutanone-trifluoromethane: nature of weak CH...O=C and CH...F hydrogen bonds.
abstract: The molecular beam Fourier transform microwave spectrum of cyclobutanone-trifluoromethane has been assigned and measured. The carbon atom of trifluoromethane lies in the plane of the heavy atoms of cyclobutanone. The complex is stabilized by one C-H...O=C and two C-H...F-C weak hydrogen bonds. The C-H...O=C interaction, involving one carbonylic oxygen, is studied for the first time in detail with rotationally resolved spectroscopy. The two C-H...F-C weak hydrogen bonds involve two fluorine atoms of trifluoromethane and two hydrogens of the same methylenic group in the alpha position.
authors.affiliation: Dipartimento di Chimica G. Ciamician dell' Università, Bologna, Italy.
authors.forename: Paolo
authors.initials: P
authors.lastname: Ottaviani
authors.forename: Walther
authors.initials: W
authors.lastname: Caminati
authors.forename: L B
authors.initials: LB
authors.lastname: Favero
authors.forename: Susana
authors.initials: S
authors.lastname: Blanco
authors.forename: Juan C
authors.initials: JC
authors.lastname: López
authors.forename: José L
authors.initials: JL
authors.lastname: Alonso
mesh_terms: D005617:Chlorofluorocarbons, Methane / Q000737:chemistry*; D003503:Cyclobutanes / Q000737:chemistry*; D006860:Hydrogen Bonding; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D005617:Chlorofluorocarbons, Methane; D003503:Cyclobutanes; C009554:fluoroform