title: Molecular structure of 1,2-bis(trifluoromethyl)-1,1,2,2-tetramethyldisilane in the gas, liquid, and solid phases: unusual conformational changes between phases.
abstract: The molecular structure of 1,2-bis(trifluoromethyl)-1,1,2,2-tetramethyldisilane has been determined in three different phases (solid, liquid, and gas) using various spectroscopic and diffraction techniques. Both the solid-state and gas-phase investigations revealed only one conformer to be present in the sample analyzed, whereas the liquid phase revealed the presence of three conformers. The data have been reproduced using computational methods and a rationale is presented for the observation of three conformers in the liquid state.
authors.affiliation: Department of Chemistry, University of Canterbury , Private Bag 4100, Christchurch 8104, New Zealand.
authors.forename: Sarah L
authors.initials: SL
authors.lastname: Masters
authors.forename: Heather E
authors.initials: HE
authors.lastname: Robertson
authors.forename: Derek A
authors.initials: DA
authors.lastname: Wann
authors.forename: Margit
authors.initials: M
authors.lastname: Hölbling
authors.forename: Karl
authors.initials: K
authors.lastname: Hassler
authors.forename: Ragnar
authors.initials: R
authors.lastname: Bjornsson
authors.forename: Sunna Ó
authors.initials: SÓ
authors.lastname: Wallevik
authors.forename: Ingvar
authors.initials: I
authors.lastname: Arnason