| 词条 | Thorium tetrafluoride |
| 释义 |
| verifiedrevid = 377858902 | Name = Thorium(IV) fluoride | ImageFile = Kristallstruktur Uran(IV)-fluorid.png | ImageName = Thorium(IV) fluoride Thorium tetrafluoride | OtherNames = |Section1={{Chembox Identifiers | CASNo = 13709-59-6 | PubChem = 83680 | EINECS = 237-259-6 | InChI = 1S/4FH.Th/h4*1H;/q;;;;+4/p-4 | SMILES = F[Th](F)(F)F |Section2={{Chembox Properties | Formula = ThF4 | MolarMass = 308.03 g/mol | Appearance = hygroscopic white crystals | Density = 6.3 g/cm3 | MeltingPtC = 1110 | BoilingPtC = 1680 | RefractIndex = 1.56 |Section3={{Chembox Structure | CrystalStruct = Monoclinic, mS60 | SpaceGroup = C12/c1, No. 15 |Section7={{Chembox Hazards | FlashPt = Non-flammable |Section8={{Chembox Related | OtherAnions = Thorium(IV) chloride Thorium(IV) bromide Thorium(IV) iodide | OtherCations = Protactinium(IV) fluoride Uranium(IV) fluoride Neptunium(IV) fluoride Plutonium(IV) fluoride | OtherCompounds = Thorium dioxide }}Thorium(IV) fluoride (ThF4) is an inorganic chemical compound. It is a white, hygroscopic powder which can be produced by reacting thorium with fluorine gas. At temperatures above 500 °C, it reacts with atmospheric moisture to produce ThOF2.[1] UsesDespite its (mild) radioactivity, thorium fluoride is used as an antireflection material in multilayered optical coatings. It has excellent optical transparency in the range 0.35–12 µm, and its radiation is primarily due to alpha particles, which can be easily stopped by a thin cover layer of another material.[2][3] Thorium fluoride was used{{when|date=February 2015}} in manufacturing carbon arc lamps, which provided high-intensity illumination for movie projectors and search lights.[4][5] See also
References1. ^{{cite book|url=https://books.google.com/books?id=0fT4wfhF1AsC&pg=PA412|page=412|title=Handbook of inorganic compounds|author=Dale L. Perry, Sidney L. Phillips|publisher=CRC Press|year=1995|isbn=0-8493-8671-3}} {{Thorium compounds}}{{fluorine compounds}}{{inorganic-compound-stub}}2. ^{{cite book|url=https://books.google.com/books?id=_VsEiRoFnXcC&pg=PA196|page=196|title=Optical thin films: user handbook|author=Rancourt, James D.|publisher=SPIE Press|year=1996|isbn=0-8194-2285-1}} 3. ^{{cite journal| author = W. Heitmann and E. Ritter| title = Production and properties of vacuum evaporated films of thorium fluoride| journal = Appl. Opt.| volume = 7| pages = 307–9| year = 1968| url = http://www.opticsinfobase.org/abstract.cfm?URI=ao-7-2-307| doi = 10.1364/AO.7.000307| pmid = 20062461| issue = 2}} 4. ^{{cite book|url=https://books.google.com/books?id=ahNFGR1jMB4C&pg=PA81|page=81|title=Encyclopedia of Chemical Processing and Design: Thermoplastics to Trays, Separation, Useful Capacity|author=McKetta, John J. |publisher=CRC Press|year=1996|isbn=0-8247-2609-X}} 5. ^Thorium tetrafluoride International Bio-Analytical Industries, Inc. 3 : Fluorides|Metal halides|Thorium compounds |
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