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Tungsten(VI) fluoride, also known as tungsten hexafluoride, is an inorganic compound with the formula W F 6. It is a toxic, corrosive, colorless gas, with a density of about 13 kg/m 3 (22 lb/cu yd) (roughly 11 times heavier than air).
Rhodium hexafluoride, also rhodium(VI) fluoride, (RhF 6) is the inorganic compound of rhodium and fluorine. A black volatile solid, [ 1 ] it is a highly reactive material which starts to slowly thermally decompose already at room temperature and a rare example of a rhodium(VI) compound.
Uranium dioxide is converted with hydrofluoric acid (HF) to uranium tetrafluoride: [4] UO 2 + 4 HF → UF 4 + 2 H 2 O. In samples contaminated with uranium trioxide, the oxyfluoride is produced in the HF step: UO 3 + HF → UF 2 O 2 + H 2 O. The resulting UF 4 is subsequently oxidized with fluorine to give the hexafluoride: UF 4 + F 2 → UF 6
Tungsten(VI) oxytetrafluoride can be synthesized by the reaction of fluorine and tungsten trioxide. [4] It can also be obtained by treating tungsten with a mixture of oxygen and fluorine at high temperatures. [1] Partial hydrolysis of tungsten hexafluoride will also produce WOF 4. [9] WF 6 + H 2 O → WOF 4 + 2 HF
Tungsten(VI) oxide, also known as tungsten trioxide is a chemical compound of oxygen and the transition metal tungsten, with formula WO 3. The compound is also called tungstic anhydride , reflecting its relation to tungstic acid H 2 WO 4 .
Molybdenum hexafluoride, also molybdenum(VI) fluoride, is the inorganic compound with the formula MoF 6. It is the highest fluoride of molybdenum. It is a colourless solid and melts just below room temperature and boils in 34 °C. [3] It is one of the seventeen known binary hexafluorides.
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Other routes entail thermolysis of tungsten(VI) sulfides (e.g., (R 4 N) 2 WS 4) or the equivalent (e.g., WS 3). [13] Freestanding WS 2 films can be produced as follows. WS 2 is deposited on a hydrophilic substrate, such as sapphire, and then coated with a polymer, such as polystyrene.