Tetraoxidane Explained

Tetraoxidane is an inorganic compound of hydrogen and oxygen with the chemical formula .^{[1] [2] [3]} This is one of the unstable hydrogen polyoxides.^[4]

Synthesis

The compound is prepared by a chemical reaction between hydroperoxyl radicals at low temperatures:^{[5] [6]}

2HO ^{\bullet} _{2} \xrightarrow{ H _{2O} _{4}}

Physical properties

This is the fourth member of the polyoxidanes. The first three are water [(mon)oxidane], hydrogen peroxide (dioxidane), and trioxidane. Tetroxidane is more unstable than the previous compounds. The term "tetraoxidane" extends beyond the parent compound to several daughter compounds of the general formula, where R can be hydrogen, halogen atoms, or various inorganic and organic monovalent radicals. The two Rs together can be replaced by a divalent radical, so heterocyclic tetroxidanes also exist.^[7]

Ionization

Tetroxidane autoionizes when in liquid form:

H _{2O} _{4} \rightleftarrows H ^{+} + HO ^{-} _{4} 2H _{2O} _{4} \rightleftarrows H _{3O} ^{+} ^{4} + HO ^{-} _{4}

Notes and References

1. Mckay . Daniel J. . Wright . James S. . How Long Can You Make an Oxygen Chain? . . 1 February 1998 . 120 . 5 . 1003–1013 . 10.1021/ja971534b . 16 May 2023 . en . 0002-7863.
2. Web site: hydroxyperoxide . ChemScr . 15 May 2023.
3. Book: The Chemistry of Peroxides, Volume 3 . 20 April 2015 . . 978-1-118-41271-8 . 198 . 15 May 2023 . en.
4. Web site: Selected ATcT [1, 2] enthalpy of formation based on version 1.122 of the Thermochemical Network [3] ]. atct.anl.gov . 15 May 2023.
5. Synthesis of Hydrogen Polyoxides H2O4 and H2O3 and Their Characterization by Raman Spectroscopy. European Journal of Inorganic Chemistry. 10.1002/ejic.201100767. 2011. 5144–5150 . Levanov, Alexander V. . Sakharov, Dmitri V. . Dashkova, Anna V. . Antipenko, Ewald E. . Lunin, Valeri V. . 2011 . 33 .
6. Book: Möller . Detlev . Fundamentals and Processes . 19 February 2019 . . 978-3-11-056126-5 . 276 . 15 May 2023 . en.
7. Two-sites are better than one: revisiting the OER mechanism on CoOOH by DFT with electrode polarization . . 2020 . 2020PCCP...22.7031C . 15 May 2023 . Curutchet . Antton . Colinet . Pauline . Michel . Carine . Steinmann . Stephan N. . Le Bahers . Tangui . 22 . 13 . 7031–7038 . 10.1039/D0CP00281J . 32195492 . 213191538 .