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Mercury(II) fluoride

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Mercury(II) fluoride
Names
Mercury(II) fluoride
IUPAC name Mercury(II) fluoride
Other names Mercuric fluoride
Identifiers
CAS Number	7783-39-3^Y
3D model (JSmol)	Interactive image
ChemSpider	74189
ECHA InfoCard	100.029.085
EC Number	231-994-6
PubChem CID	82209
UNII	1EGI9VXN9A^Y
CompTox Dashboard(EPA)	DTXSID601337587
InChI InChI=1S/2FH.Hg/h2*1H;/q;;+2/p-2 Key: FMSYTQMJOCCCQS-UHFFFAOYSA-L
SMILES F[Hg]F
Properties
Chemical formula	HgF₂
Molar mass	238.587 g/mol
Appearance	hygroscopic whitecubic crystals
Density	8.95 g/cm³
Melting point	decomposes at 645°C
Solubility in water	reacts^[1]
Magnetic susceptibility (χ)	−62.0·10⁻⁶ cm³/mol
Structure
Crystal structure	Fluorite (cubic),cF12
Space group	Fm3m, No. 225
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	highly toxic
GHS labelling:
Pictograms
Hazard statements	H300,H310,H330,H373,H410
Precautionary statements	P301+P310,P304+P340,P320,P330,P360,P361,P405,P501 [2]
NFPA 704 (fire diamond)	4 0 0
Related compounds
Otheranions	Mercury(II) chloride Mercury(II) bromide Mercury(II) iodide
Othercations	Mercury(I) fluoride Zinc fluoride Cadmium fluoride Thallium(I) fluoride
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references

Chemical compound

Mercury(II) fluoride has the molecular formula HgF₂ as achemical compound of one atom of mercury with 2 atoms offluorine.

Mercury(II) fluoride is most commonly produced by the reaction ofmercury(II) oxide andhydrogen fluoride:

HgO + 2 HF → HgF₂ + H₂O

Mercury(II) fluoride can also be produced through thefluorination ofmercury(II) chloride:

HgCl₂ + F₂ → HgF₂ + Cl₂

2 HgO + 2 F₂ → 2 HgF₂ + O₂

with oxygen as byproduct.

Mercury(II) fluoride is a selective fluorination agent.^[4]^[5]

^Lide, David R (1998),Handbook of Chemistry and Physics (87th ed.), Boca Raton, Florida: CRC Press, pp. 4–69,ISBN 0-8493-0594-2
^"Mercury(II) fluoride MSDS". ThermoFisher Scientific. Retrieved2022-02-02.
^Greenwood, Norman N.; Earnshaw, Alan (1997).Chemistry of the Elements (2nd ed.).Butterworth-Heinemann.doi:10.1016/C2009-0-30414-6.ISBN 978-0-08-037941-8.
^Purrington, Suzanne T. (2001). "Mercury(II) fluoride".Mercury(II) Fluoride.Encyclopedia of Reagents for Organic Synthesis. Wiley.doi:10.1002/047084289X.rm035.ISBN 0-471-93623-5.
^Habibi, Mohammed H.; Mallouk, Thomas E. (1991). "Photochemical selective fluorination of organic molecules using mercury (II) fluoride".Journal of Fluorine Chemistry.51 (2): 291.Bibcode:1991JFluC..51..291H.doi:10.1016/S0022-1139(00)80299-7.

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