Cobalt tetrafluorideCobalt tetrafluoride is a binary inorganic compound with a chemical formula of.SynthesisCobalt tetrafluoride was prepared is a gas-phase reaction of fluorination of by using [Terbium(IV) fluoride|] as a fluorinating agent.Physical propertiesCobalt tetrafluoride is too unstable to exist as a solid or liquid, but it is stable in a dilute gas phase.