The two-dimensional [Mo2O2F9]? anion with A bridging F atom

Dinuclear oxofluorometallates as a new structural type of d 0 transition metal oxofluoride compound

“…The dinuclear (dimeric) structure of these compounds consists of corner-shared octahedra with a bridging fluorine atom. Fluorine-bridging species [W 2 O 2 F 9 ] À (McFarlane et al, 1971;Buslaev, Kokunov, Bochkareva & Shoustorovich et al, 1972) (Casteel et al, 1998) were found in organic mediums, (CH 3 O) 2 SO, CH 3 CN. The controlled hydrolysis of hexafluorides of molybdenum, tungsten and rhenium also yielded the fluorine-bridged [M 2 O 2 F 9 ] À species (Hoskins et al, 1987).…”

Lewis Acidic Behavior of MoOF4 towards the Alkali Metal Fluorides in Anhydrous Hydrogen Fluoride Solutions

“…Additionally, work performed by Holloway and Schrobilgen described the formation of KrF 2 · n MoF 4 ( n = 1–3) and XeF 2 · n MoOF 4 ( n = 1–4) adducts, in which a structurally related anion, MoO 2 F 8 , to which an F atom from a XeF 2 ligand is bound, was observed , . These studies shed much light on the complex equilibria and solution chemistry MoOF 4 can exhibit . However, despite the potential of MoOF 4 to give rise to new chemical species, very little literature exists in which MoOF 4 was used as a starting reagent in chemical reactions .…”

“…Similarly, a study aimed at determining the interaction of MoOF 4 with acetylacetone in acetonitrile solution also reported evidence for the formation of the [Mo 2 O 2 F 9 ] – anion . Additionally, work performed by Holloway and Schrobilgen described the formation of KrF 2 · n MoF 4 ( n = 1–3) and XeF 2 · n MoOF 4 ( n = 1–4) adducts, in which a structurally related anion, MoO 2 F 8 , to which an F atom from a XeF 2 ligand is bound, was observed , .…”

“…These studies shed much light on the complex equilibria and solution chemistry MoOF 4 can exhibit . However, despite the potential of MoOF 4 to give rise to new chemical species, very little literature exists in which MoOF 4 was used as a starting reagent in chemical reactions . Therefore, the goal of this work was to expand the current knowledge of the chemical behavior of MoOF 4 in aHF solutions by reacting it with the alkali metal fluorides.…”

Transition-metal tetrafluoride oxide–antimony pentafluoride adducts; preparation and characterization of the adducts MF4O·SbF5(M = Mo, W, or Re) and crystal structures of MoF4O·SbF5and ReF4O·SbF5

“…The solid adducts have been characterized by observation of reaction stoicheiometries, Raman and mass spectra, and by X-ray diffraction. Crystals of MoF,O.SbF, are monoclinic, space group P2,/n, with unit-cell dimensions a = 7.470 (8) ,-can also be obtained., Some of the tetrafluoride oxides also form fluorinebridged adducts with noble-gas fluorides. Xenon difluoride and tungsten tetrafluoride oxide form the adducts XeF,*nWF,O (n = 1 or 2) which, in the solid state 14,16 and in solution,l4 are covalent with xenonfluorine-tungsten bridges with no appreciable contribution to the bonding from ionic formulations such as…”