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Vanadium(II) fluoride

Names
Other names Vanadium(II) fluoride
Identifiers
CAS Number	13842-80-3
3D model (JSmol)	Interactive image
PubChem CID	101602874
InChI InChI=1S/2FH.V/h2*1H;/q;;+2/p-2Key: XHZLWOBYMWIKHM-UHFFFAOYSA-L
SMILES ..
Properties
Chemical formula	F2V
Molar mass	88.9383 g·mol
Appearance	blue crystals
Solubility in water	soluble in water, forms
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

Vanadium(II) fluoride is a fluoride of vanadium, with the chemical formula of VF₂. It forms blue crystals.

Preparation

Vanadium(II) fluoride can be produced by the reduction of vanadium trifluoride by hydrogen in a hydrogen fluoride atmosphere at 1150 °C:

2 VF₃ + H₂ → 2 VF₂ + 2 HF

Properties

Physical properties

Vanadium(II) fluoride crystallizes in the tetragonal crystal system with space group P4₂/mnm (No. 136). Its lattice constants are a = 480.4 pm and c = 323.7 pm.

Reactions

Vanadium(II) fluoride is a strong reducing agent that can reduce nitrogen to hydrazine in the presence of magnesium hydroxide.

It dissolves in water to form ions.

V + 6 H₂O → [V(H₂O)₆]

References

1. "WebElements Periodic Table » Vanadium » vanadium difluoride". www.webelements.com. Retrieved 2023-09-16.
2. ^ Holleman, Arnold Frederik; Wiberg, Egon (2001), Wiberg, Nils (ed.), Inorganic Chemistry, translated by Eagleson, Mary; Brewer, William, San Diego/Berlin: Academic Press/De Gruyter, p. 1550, ISBN 0-12-352651-5
3. Lothar Kolditz: Anorganische Chemie Teil 2. VEB Deutscher Verlag der Wissenschaften, Berlin, 1980, S. 641.
4. J. W. Stout, W. O. J. Boo: Crystalline vanadium (II) fluoride, VF₂. Preparation, structure, heat capacity from 5 to 300 K and magnetic ordering. In: The Journal of Chemical Physics. 71, 1, 1979, S. 1–8, doi:10.1063/1.438115.

• Vanadium(II) compounds
• Fluorides