Zinc fluoride

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Chemical compound

title: "Zinc fluoride" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["fluorides", "metal-halides", "zinc-compounds"] description: "Chemical compound" topic_path: "general/fluorides" source: "https://en.wikipedia.org/wiki/Zinc_fluoride" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Chemical compound ::

| Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 454732113 | Name = Zinc fluoride | ImageFile = Zinc fluoride tetrahydrate.jpg | ImageFile1 = Zinc-fluoride-3D-balls.png | ImageClass = bg-transparent | ImageName = Zinc fluoride | IUPACName = Zinc(II) fluoride | OtherNames = Zinc difluoride |Section1={{Chembox Identifiers | ChemSpiderID_Ref = | ChemSpiderID = 22957 | SMILES = F[Zn]F | StdInChI_Ref = | StdInChI = 1S/2FH.Zn/h2*1H;/q;;+2/p-2 | StdInChIKey_Ref = | StdInChIKey = BHHYHSUAOQUXJK-UHFFFAOYSA-L | CASNo = 7783-49-5 | CASNo_Ref = | CASNo2_Ref = | CASNo2 = 13986-18-0 | CASNo2_Comment = (tetrahydrate) | EC_number = 232-001-9 | UNNumber = 3077 | UNII_Ref = | UNII = L9V334775I | UNII2_Ref = | UNII2 = SQ7815WXFB | UNII2_Comment = (tetrahydrate) | PubChem = 24551 | RTECS = ZH3200000 |Section2={{Chembox Properties | Formula = | MolarMass = 103.406 g/mol (anhydrous) 175.45 g/mol (tetrahydrate) | Appearance = white needles hygroscopic | Density = 4.95 g/cm3 (anhydrous) 2.30 g/cm3 (tetrahydrate) | Solubility = .000052 g/(100 mL) (anhydrous) 1.52 g/(100 mL), 20 °C (tetrahydrate) | SolubleOther = sparingly soluble in HCl, HNO3, ammonia | MeltingPtC = 872 | MeltingPt_notes = (anhydrous) 100 °C, decomposes (tetrahydrate) | BoilingPtC = 1500 | BoilingPt_notes = (anhydrous) | MagSus = −38.2·10−6 cm3/mol |Section3={{Chembox Structure | CrystalStruct = tetragonal (anhydrous), tP6 | SpaceGroup = P42/mnm, No. 136 |Section7={{Chembox Hazards | GHS_ref= | GHSPictograms = | GHSSignalWord = Danger | HPhrases = | PPhrases = | NFPA-H = 3 | NFPA-R = 0 | NFPA-F = 0 |Section8={{Chembox Related | OtherAnions = | OtherCations =

Zinc fluoride is an inorganic chemical compound with the chemical formula . It is encountered as the anhydrous form and also as the tetrahydrate, (rhombohedral crystal structure). It has a high melting point and has the rutile structure containing 6 coordinate zinc, which suggests appreciable ionic character in its chemical bonding. Unlike the other zinc halides, , and , it is not very soluble in water.

Like some other metal difluorides, crystallizes in the rutile structure, which features octahedral Zn cations and trigonal planar fluorides.

Preparation and reactions

Zinc fluoride can be synthesized several ways.

The reaction of zinc metal with fluorine gas.
Reaction of hydrofluoric acid with zinc, to yield hydrogen gas () and zinc fluoride ().

Zinc fluoride can be hydrolysed by hot water to form the zinc hydroxide fluoride, Zn(OH)F.

The salt is believed to form both a tetrahydrate and a dihydrate.

References

"ZINC fluoride".
(1995). "Handbook of Inorganic Compounds". CRC Press.
{{Greenwood&Earnshaw
(1954). "The Crystal Structure of MnF₂, FeF₂, CoF₂, NiF₂ and ZnF₂". J. Am. Chem. Soc..
(1967). "Studies on Metal Hydroxy Compounds. I. Thermal Analyses of Zinc Derivatives ε-Zn(OH)₂, Zn₅(OH)₈Cl₂ · H₂O, β-ZnOHCl, and ZnOHF". Canadian Journal of Chemistry.
(2000). "Fluorine compounds, inorganic, zinc".

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