title: CH...O and CH...F links form the cage structure of dioxane-trifluoromethane.
abstract: The molecular beam Fourier transform microwave spectrum of 1,4-dioxane-trifluoromethane has been assigned and measured. The two subunits form a cage stabilized by one C-H...O and two C-H...F weak hydrogen bonds. The C-H...O link involves the axial lone pair of one of the two equivalent ring oxygens, while the two C-H...F bridges connect trifluoromethane to the two axial hydrogens in positions 3 and 5. The dissociation energy has been estimated from the D(J) centrifugal distortion parameter to be approximately 6.8 kJ/mol.
authors.affiliation: Istituto per lo Studio dei Materiali Nanostrutturati (ISMN, Sezione di Bologna), CNR, Via Gobetti 101, I-40129 Bologna, Italy.
authors.forename: Laura B
authors.initials: LB
authors.lastname: Favero
authors.forename: B Michela
authors.initials: BM
authors.lastname: Giuliano
authors.forename: Sonia
authors.initials: S
authors.lastname: Melandri
authors.forename: Assimo
authors.initials: A
authors.lastname: Maris
authors.forename: Paolo
authors.initials: P
authors.lastname: Ottaviani
authors.forename: Biagio
authors.initials: B
authors.lastname: Velino
authors.forename: Walther
authors.initials: W
authors.lastname: Caminati