Mercury(II) fluoride has the molecular formula HgF2 as a chemical compound of one atom of mercury with 2 atoms of fluorine. Synthesis 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 of mercury(II) oxide: 2 HgO + 2 F2 → 2 HgF2 + O2 with oxygen as byproduct. Applications Mercury(II) fluoride is a selective fluorination agent. References Fluorides Mercury(II) compounds Metal halides Fluorinating agents Fluorite crystal structure