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Zinc fluoride

Chemical compound

Chemical compound

175.45 g/mol (tetrahydrate) hygroscopic 2.30 g/cm3 (tetrahydrate) 1.52 g/(100 mL), 20 °C (tetrahydrate) 100 °C, decomposes (tetrahydrate) | NFPA-H = 3 | NFPA-R = 0 | NFPA-F = 0

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

References

  1. "ZINC fluoride".
  2. (1995). "Handbook of Inorganic Compounds". CRC Press.
  3. {{Greenwood&Earnshaw
  4. (1954). "The Crystal Structure of MnF2, FeF2, CoF2, NiF2 and ZnF2". J. Am. Chem. Soc..
  5. (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.
  6. (2000). "Fluorine compounds, inorganic, zinc".
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fluorides metal-halides zinc-compounds
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