Fluoronium

Fluoronium is a cation (chemical compound with positive electric charge) made of hydrogen and fluorine. It has the chemical formula H2F+. It can also mean any halonium ion based on fluorine.[1]

Fluoronium is a very strong acid. It is the conjugate acid of hydrogen fluoride, a chemical that is one of the weakest bases. Fluoronium is the main source of acidity in superacids based on HF, including fluoroantimonic acid, by some definitions the strongest known acid.[2]

References

  1. ↑ Pitts, Cody Ross; Holl, Maxwell Gargiulo; Lectka, Thomas (2018). "Spectroscopic Characterization of a [C−F−C]+ Fluoronium Ion in Solution". Angewandte Chemie International Edition. 57 (7): 1924–1927. doi:10.1002/anie.201712021. PMID 29316122.
  2. ↑ Esteves, Pierre M.; Ramírez-Solís, Alejandro; Mota, Claudio J. A. (2002). "The Nature of Superacid Electrophilic Species in HF/SBF5: A Density Functional Theory Study". Journal of the American Chemical Society. 124 (11): 2672–2677. Bibcode:2002JAChS.124.2672E. doi:10.1021/ja011151k. PMID 11890818.


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