Chromium hexafluoride or chromium(VI) fluoride (CrF6) is a hypothetical chemical compound between chromium and fluorine with the chemical formula CrF6. It was previously thought to be an unstable yellow solid decomposing at −100 °C,[1] but this has been shown to be a misidentification of chromium pentafluoride, CrF5.[2]
Unsuccessful attempts at synthesis
editCrF6 used to be thought to be produced by exhaustive fluorination of chromium metal at 400 °C and 20 MPa of pressure, and immediate freezing out of the reaction chamber to prevent decomposition:
- Cr + 3 F2 → CrF6
However, it has been shown that chromium pentafluoride (CrF5) is formed instead:
- 2 Cr + 5 F2 → 2 CrF5
and that CrF6 has yet to be synthesized.
References
edit- ^ Hope, Eric G.; Levason, William.; Ogden, J. Steven (1991). "Is chromium hexafluoride octahedral? Experiment still suggests "yes!"". Inorganic Chemistry. 30 (26): 4873. doi:10.1021/ic00026a002.
- ^ Riedel, Sebastian; Kaupp, Martin (2009). "The highest oxidation states of the transition metal elements". Coordination Chemistry Reviews. 253 (5–6): 606–624. doi:10.1016/j.ccr.2008.07.014.
🔥 Top keywords: Akademia e Shkencave e RPS te ShqiperiseAlexandria Ocasio-CortezBilderberg GroupCristiano RonaldoDong XiaowanMinecraftOperation GladioPrimal cutRiot FestStrictly Come Dancing (series 7)Main PageSpecial:SearchWikipedia:Featured picturesUEFA Euro 2024Donald SutherlandJacob FatuInside Out 2CleopatraUFC on ABC: Whittaker vs. AliskerovDeaths in 2024List of teams that have overcome 3–0 series deficitsCristiano RonaldoUEFA European ChampionshipChappell RoanJessica AlbaSam FatuHouse of the Dragon2024 Copa AméricaYouTubeRomelu Lukaku.xxxSherri Papini kidnapping hoaxPepe (footballer, born 1983)Project 2025The BikeridersTaylor Wily2024 ICC Men's T20 World CupSabrina CarpenterKiefer SutherlandThe Boys (TV series)Copa AméricaKalki 2898 ADHinduja GroupTaylor SwiftOpinion polling for the 2024 United Kingdom general electionThe Boys season 4BridgertonShania TwainGeorgia (country)