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{{chembox |
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{{chembox |
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| verifiedrevid = 414433786 |
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| Watchedfields = changed |
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| verifiedrevid = 428719936 |
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| Name = Mercury(II) fluoride |
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| Name = Mercury(II) fluoride |
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| ImageFile = Mercury(II)-fluoride-xtal-3D-sticks.png |
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| ImageFile = Mercury(II)-fluoride-xtal-3D-sticks.png |
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| ImageSize = |
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| ImageSize = |
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| ImageName = Mercury(II) fluoride |
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| ImageName = Mercury(II) fluoride |
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| IUPACName = Mercury(II) fluoride |
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| IUPACName = Mercury(II) fluoride |
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| OtherNames = Mercuric fluoride |
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| OtherNames = Mercuric fluoride |
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| Section1 = {{Chembox Identifiers |
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|Section1={{Chembox Identifiers |
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| CASNo = 7783-39-3 |
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| CASNo = 7783-39-3 |
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| CASNo_Ref = |
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| CASNo_Ref = {{cascite|correct|??}} |
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| CASOther = |
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| CASNoOther = |
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| UNII_Ref = {{fdacite|correct|FDA}} |
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| RTECS = |
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| EINECS = |
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| UNII = 1EGI9VXN9A |
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| RTECS = |
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| EC_number = 231-994-6 |
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| PubChem = 82209 |
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| InChI = 1S/2FH.Hg/h2*1H;/q;;+2/p-2 |
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| InChIKey = FMSYTQMJOCCCQS-UHFFFAOYSA-L |
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| SMILES = FF |
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}} |
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| Section2 = {{Chembox Properties |
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|Section2={{Chembox Properties |
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| Formula = HgF<sub>2</sub> |
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| Formula = HgF<sub>2</sub> |
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| MolarMass = 238.59 g/mol |
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| MolarMass = 238.587 g/mol |
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| Appearance = ] white ] crystals |
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| Appearance = ] white ] crystals |
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| Density = 8.95 g/cm<sup>3</sup> |
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| Density = 8.95 g/cm<sup>3</sup> |
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| MeltingPt = decomposes at 645°C |
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| MeltingPt = decomposes at 645°C |
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| BoilingPt = |
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| BoilingPt = |
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| Solubility = reacts<ref name="hand"> |
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| Solubility = reacts<ref name="hand"> |
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{{Citation | last = Lide | first = David R. | year = 1998 |
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{{Citation |last= Lide |first= David R |year= 1998 |
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| title = Handbook of Chemistry and Physics |
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| title = Handbook of Chemistry and Physics |
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| edition = 87 | publication-place = Boca Raton, FL | publisher = CRC Press | isbn = 0-8493-0594-2 | pages = 4–69}}</ref> |
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| edition= 87th |location = Boca Raton, Florida |publisher= CRC Press |isbn= 0-8493-0594-2 |pages= 4–69}}</ref> |
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| SolubleOther = |
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| SolubleOther = |
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| MagSus = −62.0·10<sup>−6</sup> cm<sup>3</sup>/mol |
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}} |
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| Section3 = {{Chembox Structure |
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|Section3={{Chembox Structure |
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| CrystalStruct = ] (cubic), ] |
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| CrystalStruct = ] (cubic), ] |
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| SpaceGroup = Fm<u style="text-decoration:overline">3</u>m, No. 225 |
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| SpaceGroup = Fm{{overline|3}}m, No. 225 |
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}} |
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| Section4 = {{Chembox Thermochemistry |
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|Section4={{Chembox Thermochemistry |
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| DeltaHf = |
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| DeltaHf = |
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| DeltaHc = |
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| DeltaHc = |
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| Entropy = |
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| Entropy = |
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| HeatCapacity = |
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| HeatCapacity = |
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| Section7 = {{Chembox Hazards |
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|Section7={{Chembox Hazards |
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| MainHazards = highly toxic |
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| ExternalMSDS = |
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| EUIndex = |
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| ExternalSDS = |
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| NFPA-H = |
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| NFPA-H = 4 |
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| NFPA-F = |
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| NFPA-F = 0 |
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| NFPA-R = |
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| NFPA-R = 0 |
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| GHSPictograms = {{GHS06}}{{GHS08}}{{GHS09}} |
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| RPhrases = |
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| SPhrases = |
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| FlashPt = |
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| HPhrases = {{H-phrases|300|310|330|373|410}} |
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| FlashPt = |
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| PPhrases = {{P-phrases|360|301+310|304+340|320|330|361|405|501}}<ref>{{cite web|url=https://www.alfa.com/it/msds/?language=EN&subformat=CLP1&sku=11533|title=Mercury(II) fluoride MSDS|publisher=ThermoFisher Scientific|access-date=2022-02-02}}</ref> |
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}} |
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}} |
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| Section8 = {{Chembox Related |
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|Section8={{Chembox Related |
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| OtherAnions = ]<br/>]<br/>] |
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| OtherAnions = ]<br/>]<br/>] |
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| OtherCations = ]<br/>]<br/>] |
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| OtherCations = ]<br/>]<br/>]<br/>] |
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'''Mercury fluoride''' has the molecular formula HgF<sub>2</sub>. |
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'''Mercury(II) fluoride''' has the molecular formula HgF<sub>2</sub> as a ] of one atom of mercury with 2 atoms of ]. |
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==Synthesis== |
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Mercury(II) fluoride is most commonly produced by the reaction of ] and ]: |
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:HgO + 2 HF → HgF<sub>2</sub> + H<sub>2</sub>O |
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Mercury(II) fluoride can also be produced through the ] of ]: |
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:HgCl<sub>2</sub> + F<sub>2</sub> → HgF<sub>2</sub> + Cl<sub>2</sub> |
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or of ]:<ref>{{Greenwood&Earnshaw}}</ref> |
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:2 HgO + 2 F<sub>2</sub> → 2 HgF<sub>2</sub> + O<sub>2</sub> |
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with oxygen as byproduct. |
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==Applications== |
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Mercury(II) fluoride is a selective fluorination agent.<ref>{{cite journal |doi= 10.1016/S0022-1139(00)80299-7 |title= Photochemical selective fluorination of organic molecules using mercury (II) fluoride |year=1991 |last1=Habibi |first1=Mohammed H. |last2=Mallouk |first2=Thomas E. |journal= Journal of Fluorine Chemistry |volume=51 |issue=2 |pages=291}}</ref> |
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==References== |
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==References== |
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{{reflist}} |
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{{reflist}} |
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{{Mercury compounds}} |
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{{Mercury compounds}} |
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{{fluorides}} |
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