Molybdenum(V) fluoride

Molybdenum(V) fluoride is an inorganic compound with the formula MoF₅. It is a hygroscopic yellow solid. Like most pentafluorides, it exists as a tetramer.^[2]

Molybdenum(V) fluoride

Molybdenum(V) fluoride
Names
IUPAC names Molybdenum(V) fluoride Molybdenum pentafluoride
Identifiers
CAS Number	13819-84-6 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:30711
ChemSpider	123127
Gmelin Reference	2499
PubChem CID	139613
CompTox Dashboard (EPA)	DTXSID10160528
InChI InChI=1S/5FH.Mo/h5*1H;/q;;;;;+5/p-5 Key: NBJFDNVXVFBQDX-UHFFFAOYSA-I
SMILES F[Mo](F)(F)(F)F
Properties
Chemical formula	F5Mo
Molar mass	190.94 g·mol−1
Appearance	yellow solid
Density	3.44 g/cm3
Melting point	45.7 °C (114.3 °F; 318.8 K)[1]
Boiling point	50 °C (122 °F; 323 K)[1] (sublimes)
Thermochemistry
Heat capacity (C)	96.6 J/mol·K
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	oxidizer, hydrolyzes to release HF
Flash point	Non-flammable
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

Production

Molybdenum(V) fluoride is produced by the reaction of molybdenum and molybdenum hexafluoride:^[3]

Mo + 5 MoF₆ → 6 MoF₅

It can also be prepared by the reduction of molybdenum hexafluoride with phosphorus trifluoride or tungsten hexacarbonyl, or by the oxidation of elemental molybdenum with fluorine at 900 °C.^[3]

About 165 °C, it disproportionates to the tetra- and hexafluoride:^[1]

2 MoF₅ → MoF₄ + MoF₆