title: Molybdenum(V) fluoride
text: # Molybdenum(V) fluoride
  
  Molybdenum(V) fluoride is an inorganic compound with the formula $MoF_5.$ It is a hygroscopic yellow solid. Like most pentafluorides, it exists as a tetramer.
  
  ## Production
  
  Molybdenum(V) fluoride is produced by the reaction of molybdenum and molybdenum hexafluoride:
  
      Mo + 5 $MoF_6$ → 6 $MoF_5$
  
  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.
  
  About 165 °C, it disproportionates to the tetra- and hexafluoride:
  
      2 $MoF_5$ → $MoF_4$ + $MoF_6$
  