Vanadium(III) fluoride

Chemical compound

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Vanadium(III) fluoride, also known as vanadium trifluoride, is an inorganic compound with the chemical formula VF_. It is a crystalline solid that appears as a green powder. Vanadium(III) fluoride is primarily used in research and industrial applications.

Structure and properties

Vanadium(III) fluoride adopts a rhombohedral crystal system, similar to that of aluminum trifluoride. The compound is composed of vanadium ions in the +3 oxidation state, coordinated by six fluoride ions in an octahedral geometry. This structure is typical for many metal trifluorides.

The compound is insoluble in water and most organic solvents, which is characteristic of many metal fluorides. It is stable at room temperature but can react with strong acids and bases.

Synthesis

Vanadium(III) fluoride can be synthesized by the reaction of vanadium(III) oxide with hydrofluoric acid:

V_O_ + 6 HF _ 2 VF_ + 3 H_O

Alternatively, it can be prepared by the direct reaction of vanadium metal with fluorine gas at elevated temperatures:

2 V + 3 F_ _ 2 VF_

Applications

While vanadium(III) fluoride does not have widespread commercial applications, it is used in some specialized industrial processes. It serves as a precursor to other vanadium compounds and is used in the study of catalysis and material science.

Safety

As with many metal fluorides, vanadium(III) fluoride should be handled with care. It is important to avoid inhalation, ingestion, or contact with skin and eyes. Proper protective equipment should be used when handling the compound.

Related pages

• Vanadium(IV) fluoride
• Vanadium(V) oxide
• Fluoride