Mercury(II) fluoride

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Mercury(II) fluoride
Mercury(II) fluoride
IUPAC name
Mercury(II) fluoride
Other names
Mercuric fluoride
ECHA InfoCard 100.029.085
Molar mass 238.587 g/mol
Appearance hygroscopic white cubic crystals
Density 8.95 g/cm3
Melting point decomposes at 645°C
−62.0·10−6 cm3/mol
Fluorite (cubic), cF12
Fm3m, No. 225
Related compounds
Other anions
Mercury(II) chloride
Mercury(II) bromide
Mercury(II) iodide
Other cations
Mercury(I) fluoride
Zinc fluoride
Cadmium fluoride
Thallium(I) fluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
"Mercuric fluoride" redirects here.

Mercury(II) fluoride has the molecular formula HgF2.


Mercury(II) fluoride is most commonly produced by the reaction of mercury(II) oxide and hydrogen fluoride:

HgO + 2 HF → HgF2 + H2O

Mercury(II) fluoride can also be produced through the fluorination of mercury(II) chloride:

HgCl2 + F2 → HgF2 + Cl2

or mercury(II) oxide:.[2]

2 HgO + 2 F2 → 2 HgF2 + O2


Mercury(II) fluoride is a selective fluorination agent.[3]


  1. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–69, ISBN 0-8493-0594-2 
  2. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 0-08-037941-9. 
  3. ^ Habibi, Mohammed H.; Mallouk, Thomas E. (1991). "Photochemical selective fluorination of organic molecules using mercury (II) fluoride". Journal of Fluorine Chemistry. 51 (2): 291. doi:10.1016/S0022-1139(00)80299-7.