title: Fluoride-ion acceptor properties of WSF4: synthesis, characterization, and computational study of the WSF5(-) and W2S2F9(-) anions and 19F NMR spectroscopic characterization of the W2OSF9(-) anion.
abstract: The new [N(CH(3))(4)][WSF(5)] salt was synthesized by two preparative methods: (a) by reaction of WSF(4) with [N(CH(3))(4)][F] in CH(3)CN and (b) directly from WF(6) using the new sulfide-transfer reagent [N(CH(3))(4)][SSi(CH(3))(3)]. The [N(CH(3))(4)][WSF(5)] salt was characterized by Raman, IR, and (19)F NMR spectroscopy and [N(CH(3))(4)][WSF(5)]·CH(3)CN by X-ray crystallography. The reaction of WSF(4) with half an aliquot of [N(CH(3))(4)][F] yielded [N(CH(3))(4)][W(2)S(2)F(9)], which was characterized by Raman and (19)F NMR spectroscopy and by X-ray crystallography. The WSF(5)(-) and W(2)S(2)F(9)(-) anions were studied by density functional theory calculations. The novel [W(2)OSF(9)](-) anion was observed by (19)F NMR spectroscopy in a CH(3)CN solution of WOF(4) and WSF(5)(-), as well as CH(3)CN solutions of WSF(4) and WOF(5)(-).
authors.affiliation: Department of Chemistry and Biochemistry, The University of Lethbridge, Lethbridge, Alberta T1K 3M4, Canada.
authors.forename: Jared
authors.initials: J
authors.lastname: Nieboer
authors.forename: Ralf
authors.initials: R
authors.lastname: Haiges
authors.forename: William
authors.initials: W
authors.lastname: Hillary
authors.forename: Xin
authors.initials: X
authors.lastname: Yu
authors.forename: Tyler
authors.initials: T
authors.lastname: Richardet
authors.forename: Hélène P A
authors.initials: HP
authors.lastname: Mercier
authors.forename: Michael
authors.initials: M
authors.lastname: Gerken