The fluoronium ion is an inorganic cation with the chemical formula H2F+. It is one of the cations found in fluoroantimonic acid. The structure of the salt with the Sb2F−11 anion, has been determined. The fluoronium ion is isoelectronic with the water molecule and the azanide ion. The term can also refer to organyl substituted species of type H––R, R––R, or R2C=F+. In contrast to the heavier halogens, which have long been known to form open-chain halonium ions (such as [Me2Cl]+[Al(OTeF6)4]–) as well as cyclic haliranium ions, fluorine was not believed to form fluoronium ions of type R––R until the recent characterization of a fluoronium ion locked in a designed cage structure by Lectka and coworkers. Recent solvolysis experiments and NMR spectroscopic studies on a metastable [C–F–C]+ fluoronium ion strongly support the divalent fluoronium structure over the alternative rapidly equilibrating classical carbocation. Definitive structural proof of the symmetrical [C–F–C]+ was reported by Riedel, Lectka, and coworkers by single crystal X-ray diffraction analysis. Besides its synthesis and crystallographic characterization as the [Sb2F11]− salt, vibrational spectra could be recorded and a detailed analysis concerning the nature of the bonding situation in this fluoronium ion and its heavier halonium homologues was reported. (Wikipedia).
Everything Matters | Flourine | Ron Hipschman | Exploratorium
Furiously reactive, fluorine has a ferocious appetite for attracting electrons from other elements, and a fearsome habit of killing chemists. Due to the strength of its bonds, fluorine is found almost exclusively in compounds such as the colorful mineral fluorite. Early attempts to isolate
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Fluorine - Periodic Table of Videos
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Fluorine (version 1) - Periodic Table of Videos
Our new and much improved fluorine video at http://www.youtube.com/watch?v=vtWp45Eewtw More links in description below ↓↓↓ Fluorine is a pale yellow gas and is the most reactive element. Support Periodic Videos on Patreon: https://www.patreon.com/periodicvideos A video on every element:
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Selenium - Periodic Table of Videos
Selenium is element number 34. More links in description below ↓↓↓ Support Periodic Videos on Patreon: https://www.patreon.com/periodicvideos A video on every element: http://bit.ly/118elements More at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/peri
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Fermium - Periodic Table of Videos
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