Vanadium tetrafluoride

  • Vanadium tetrafluoride
  • Vanadium (IV ) fluoride
  • Vanadintetrafluorid

Light green solid

Fixed

3.15 g · cm -3

Decomposition at 325 ° C.

Sublimated

Insoluble in non-polar solvents

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Vanadium (IV ) fluoride is a chemical compound of the elements vanadium and fluoride. It is a light green, hygroscopic solid which decomposes at 325 ° C.

History

Vanadium tetrafluoride was first described in 1911 by Otto Ruff and Herbert Lickfett.

Production and representation

Vanadium (IV ) fluoride can be obtained by allowing to act hydrofluoric acid at low temperatures, vanadium tetrachloride.

Properties

Physical Properties

Vanadium (IV ) fluoride crystallizes in a layer structure ( monoclinic symmetry, space group P21 / n), in which the vanadium ions are octahedrally surrounded by fluoride ions. Each VF6 octahedra linked via four corners with other octahedra.

Chemical Properties

Disproportionated by heating the vanadium (IV ) fluoride in the vanadium (III ) fluoride, and vanadium (V ) fluoride:

In the reaction with acids releasing highly toxic hydrogen fluoride, hydrochloric acid as an example here:

Fluorine CAS registry number PubChem Dangerous Substances Directive (67/548/EEC) Chemical element Octahedron Vanadium(III) fluoride Digital Object Identifier
798531
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