▁F 2 ▁ ▁→ ▁▁ 2 ▁V F 5 ▁Alternatively , ▁dis pro port ion ation ▁of ▁van ad ium ▁t etra flu or ide ▁yields ▁equal ▁amounts ▁of ▁the ▁solid ▁trif lu or ide ▁and ▁the ▁vol atile ▁p enta flu or ide : ▁ 2 ▁V F 4 ▁ ▁→ ▁▁ ▁V F 3 ▁ ▁+ ▁ ▁V F 5 ▁This ▁conversion ▁is ▁conducted ▁at ▁ 6 5 0   ° C . ▁ ▁It ▁can ▁also ▁be ▁synth es ized ▁by ▁using ▁element al ▁flu or ine ▁to ▁flu or inate ▁industrial ▁concentr ates ▁and ▁raw ▁materials ▁so ▁as ▁to ▁produce ▁V F 5 ▁on ▁an ▁industrial ▁scale . ▁V F 5 ▁can ▁be ▁synth es ized ▁from ▁the ▁reaction ▁of ▁raw ▁materials ▁such ▁as ▁met all ic ▁Van ad ium , ▁ferro van ad ium , ▁van ad ium ▁( V ) ▁ox ide ▁and ▁van ad ium ▁t etra flu or ide ▁with ▁element al ▁flu or ine . ▁ ▁V F 5 ▁ion ises ▁in ▁the ▁liquid ▁state ▁as ▁reflected ▁by ▁the ▁high ▁values ▁of ▁Tr out on ' s ▁constant ▁and ▁elect rical ▁conduct iv ities . ▁ ▁Character istics ▁and ▁React ivity ▁Interest ▁in ▁this ▁highly ▁cor ros ive ▁comp ound ▁began ▁in ▁the ▁f ift ies ▁when ▁there ▁was ▁extensive ▁studies ▁of ▁its ▁phys ico chem ical ▁properties . ▁It ▁is ▁a ▁powerful ▁flu or in ating ▁and ▁ox id izing ▁agent . ▁ ▁It ▁ox id izes ▁element al ▁sul fur ▁to ▁sul