Rhenium fluoride can refer to
Rhenium(IV) fluoride (rhenium tetrafluoride, ReF4), a blue crystal Rhenium(V) fluoride (rhenium pentafluoride, ReF5), a yellow-green crystal Rhenium(VI) fluoride (rhenium hexafluoride, ReF6), a liquid, or yellow solid Rhenium(VII) fluoride (rhenium heptafluoride, ReF7), a liquid, or bright yellow solid