Vanadium(V) oxytrifluoride

Vanadium(V) oxytrifluoride is a chemical compound with the formula VOF₃. It is one of several vanadium(V) oxyhalides. VOF₃ is a yellowish orange powder that is sensitive to moisture.^[2] Characteristic of early metal fluorides, the structure is polymeric in the solid state. The solid adopts a layered structure but upon evaporation, the species becomes dimeric. In contrast VOCl₃ and VOBr₃ remain tetrahedral in all states, being volatile liquids at room temperature.^[3]

Vanadium(V) oxytrifluoride

Names
Other names Vanadium oxyfluoride Trifluorooxovanadium
Identifiers
CAS Number	13709-31-4 Y
3D model (JSmol)	Interactive image
ChemSpider	10329766
ECHA InfoCard	100.033.849
PubChem CID	123322
SMILES O=[V](F)(F)F
Properties
Chemical formula	VOF3
Molar mass	123.9599 g/mol
Appearance	yellowish orange powder
Density	2.4590 g/cm3
Melting point	300 °C (572 °F; 573 K)
Boiling point	480 °C (896 °F; 753 K)
Solubility in water	insoluble
Hazards
GHS labelling:[1]
Pictograms
Signal word	Danger
Hazard statements	H302, H312, H314, H332
Precautionary statements	P260, P261, P264, P270, P271, P280, P301+P310, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P310, P312, P322, P330, P361, P363, P405, P501
NFPA 704 (fire diamond)	3
Related compounds
Related compounds	Vanadium(V) fluoride Vanadium(V) oxytrichloride Vanadium dioxyfluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Reactions

In organic synthesis, VOF₃ is used for the oxidative coupling of phenols, for example in the syntheses of vancomycin and its analogues.^[4] For these applications VOF₃ is typically dissolved in trifluoroacetic acid.

Vanadium(V) oxytrifluoride reacts with hexamethyldisiloxane to give vanadium dioxide fluoride:^[5]

(CH₃)₃SiOSi(CH₃)₃ + VOF₃ → VO₂F + 2 (CH₃)₃SiF