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Pentafluoride
Pentafluoride may refer to: * Antimony pentafluoride, SbF5 *Arsenic pentafluoride, AsF5 *Bismuth pentafluoride, BiF5 *Bromine pentafluoride, BrF5 *Chlorine pentafluoride, ClF5 *Chromium pentafluoride, CrF5 * Gold pentafluoride, Au2F10 *Iodine pentafluoride, IF5 * Iridium pentafluoride, IrF5 * Manganese pentafluoride, MnF5 (predicted) * Molybdenum pentafluoride, MoF5 * Niobium pentafluoride, NbF5 *Nitrogen pentafluoride, NF5 (hypothetical) * Neptunium pentafluoride, NpF5 *Osmium pentafluoride, OsF5 *Phosphorus pentafluoride, PF5 * Platinum pentafluoride, PtF5 *Plutonium pentafluoride, PuF5 * Protactinium pentafluoride, PaF5 * Rhenium pentafluoride, ReF5 * Rhodium pentafluoride, RhF5 * Ruthenium pentafluoride, RuF5 * Tantalum pentafluoride, TaF5 * Technetium pentafluoride, TcF5 * Tungsten pentafluoride, WF5 * Uranium pentafluoride, UF5 *Vanadium pentafluoride Vanadium(V) fluoride is the inorganic compound with the chemical formula VF5. It is a colorless volatile liquid. It is a high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iodine Pentafluoride
Iodine pentafluoride is an interhalogen compound with chemical formula IF5. It is one of the fluorides of iodine. It is a colorless liquid, although impure samples appear yellow. It is used as a fluorination reagent and even a solvent in specialized syntheses. Preparation It was first synthesized by Henri Moissan in 1891 by burning solid iodine in fluorine gas. This exothermic reaction is still used to produce iodine pentafluoride, although the reaction conditions have been improved. :I2 + 5 F2 → 2 IF5 Reactions IF5 reacts vigorously with water forming hydrofluoric acid and iodic acid: :IF5 + 3 H2O → HIO3 + 5 HF Upon treatment with fluorine, it converts to iodine heptafluoride: :IF5 + F2 → IF7 It has been used as a solvent for handling metal fluorides. For example, the reduction of osmium hexafluoride to osmium pentafluoride with iodine is conducted in a solution in iodine pentafluoride: :10 OsF6 + I2 → 10 OsF5 + 2 IF5 Primary amines react with iodine pentafluo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antimony Pentafluoride
Antimony pentafluoride is the inorganic compound with the formula Sb F5. This colourless, viscous liquid is a valuable Lewis acid and a component of the superacid fluoroantimonic acid, formed when mixing liquid HF with liquid SbF5 in a 2:1 ratio. It is notable for its Lewis acidity and its ability to react with almost all known compounds. Preparation Antimony pentafluoride is prepared by the reaction of antimony pentachloride with anhydrous hydrogen fluoride:Sabina C. Grund, Kunibert Hanusch, Hans J. Breunig, Hans Uwe Wolf "Antimony and Antimony Compounds" in Ullmann's Encyclopedia of Industrial Chemistry 2006, Wiley-VCH, Weinheim. :SbCl5 + 5 HF → SbF5 + 5 HCl It can also be prepared from antimony trifluoride and fluorine. Structure and chemical reactions In the gas phase, SbF5 adopts a trigonal bipyramidal structure of D3h point group symmetry (see picture). The material adopts a more complicated structure in the liquid and solid states. The liquid contains polymers wherein ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chlorine Pentafluoride
Chlorine pentafluoride is an interhalogen compound with formula ClF5. This colourless gas is a strong oxidant that was once a candidate oxidizer for rockets. The molecule adopts a square pyramidal structure with C4v symmetry, as confirmed by its high-resolution 19F NMR spectrum. It was first synthesized in 1963. Preparation Some of the earliest research on the preparation was classified. It was first prepared by fluorination of chlorine trifluoride at high temperatures and high pressures: :ClF3 + F2 → ClF5 :ClF + 2F2 → ClF5 :Cl2 + 5F2 → 2ClF5 :CsClF4 + F2 → CsF + ClF5 NiF2 catalyzes this reaction. Certain metal fluorides, MClF4 (i.e. KClF4, RbClF4, CsClF4), react with F2 to produce ClF5 and the corresponding alkali metal fluoride. Reactions In a highly exothermic reaction, ClF5 reacts with water to produce chloryl fluoride and hydrogen fluoride: : + 2 → + 4 It is also a strong fluorinating agent. At room temperature it reacts readil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vanadium Pentafluoride
Vanadium(V) fluoride is the inorganic compound with the chemical formula VF5. It is a colorless volatile liquid. It is a highly reactive compound, as indicated by its ability to fluorinate organic substances. Properties and structure The compound is exclusively a monomer in the gas phase. In the gas phase it adopts D3h symmetric trigonal bipyramidal geometry as indicated by electron diffraction. As a solid, VF5 forms a polymeric structure with fluoride-bridged octahedral vanadium centers. The formation enthalpy of VF5 is -1429.4 ± 0.8 kJ/mol. It is the only known pentahalide of vanadium. Synthesis Vanadium pentafluoride can be prepared by fluorination of vanadium metal: : 2 V + 5 F2 → 2 VF5 Alternatively, disproportionation of vanadium tetrafluoride yields equal amounts of the solid trifluoride and the volatile pentafluoride: :2 VF4 → VF3 + VF5 This conversion is conducted at 650 °C. It can also be synthesized by using elemental fluorine to fluorinate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold Pentafluoride
Gold(V) fluoride is the inorganic compound with the formula Au2F10. This fluoride compound features gold in its highest known oxidation state. This red solid dissolves in hydrogen fluoride but these solutions decompose, liberating fluorine. The structure of gold(V) fluoride in the solid state is centrosymmetric with hexacoordinated gold and an octahedral arrangement of the fluoride centers on each gold center. It is the only known dimeric pentafluoride, although sulfur can form disulfur decafluoride; other pentafluorides are monomeric ( P, As, Sb, Cl, Br, I), tetrameric ( Nb, Ta, Cr, Mo, W, Tc, Re, Ru, Os, Rh, Ir, Pt), or polymeric ( Bi, V, U). In the gas phase, a mixture of dimer and trimer in the ratio 82:18 has been observed. Gold pentafluoride is the strongest known fluoride ion acceptor, exceeding the acceptor tendency of even antimony pentafluoride. Synthesis Gold(V) fluoride can be synthesized by heating gold metal in an atmosphere of oxygen and fluo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium Pentafluoride
Uranium pentafluoride is the inorganic compound with the chemical formula UF5. It is a pale yellow paramagnetic solid. The compound has attracted interest because it is related to uranium hexafluoride, which is widely used to produce uranium fuel. It crystallizes in two polymorphs, called α- and β-UF5. Synthesis and structure Uranium pentafluoride is an intermediate in the conversion of uranium tetrafluoride to volatile UF6: :2UF4 + F2 → 2UF5 :2UF5 + F2 → 2UF6 It can be produced by reduction of the hexafluoride with carbon monoxide at elevated temperatures. : 2UF6 + CO → 2UF5 + COF2 Other reducing agents have been examined. The α form is a linear coordination polymer consisting of chains of octahedral uranium centers in which one of the five fluoride anion forms a bridge to the next uranium atom. The structure is reminiscent of that for vanadium pentafluoride. In the β form, the uranium centers adopt a square antiprismatic structure. The β polymorp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
