Xenon acid is a very unstable chemical compound with the formula H 4 XeO 6 . Very strong tetrabasic acid. Xenonic acid salts are called perxenates ; they, unlike the acid itself, are stable.
Xenon acid | |
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Are common | |
Systematic name | Tetrahydroxy (dioxo) xenon |
Chem. formula | H 4 XeO 6 |
Physical properties | |
Molar mass | 231.32 g / mol |
Classification | |
Reg. CAS number | |
Smiles | |
Getting
Xenon acid is obtained by dissolving xenon (VIII) oxide in water.
Chemical Properties
Not isolated in its pure form, since in an acidic environment it quickly decomposes into xenon trioxide and oxygen [1] [2] :
Its proposed formula, H 4 XeO 6 , is based on the octahedral geometry of the perxenate ion (XeO 6 4− ) in its alkali metal salts [1] [3] .
It was estimated that pK a of xenonic acid is below zero, which makes it very strong. Xenon acid dissociates stepwise into ions :
In this case, the H 3 XeO 6 - ion has a relatively acid value of p K a 4.29, and the H 2 XeO 6 2– ion is 10.81 [4] . Usually, perxenate salts are formed with the anion XeO 6 4– [1] [5] .
The acid is a very strong oxidizing agent due to the XeO 6 4− ion, in which the noble gas is oxidized to the maximum oxidation state , giving off all 8 electrons from the last electron shell .
See also
- Xenon acid
Notes
- ↑ 1 2 3 Klaening, UK; Appelman, EH Protolytic properties of perxenic acid (neopr.) // Inorganic Chemistry. - 1988. - October ( t. 27 , No. 21 ). - S. 3760-3762 . - DOI : 10.1021 / ic00294a018 .
- ↑ Holleman, Arnold Frederik & Wiberg, Egon (2001), Wiberg, Nils, ed., Inorganic Chemistry , San Diego / Berlin: Academic Press / De Gruyter, p. 400, ISBN 0-12-352651-5
- ↑ Hamilton; Ibers, J .; MacKenzie, D. Geometry of the Perxenate Ion (Eng.) // Science. - 1963. - August ( vol. 141 , no. 3580 ). - P. 532-534 . - ISSN 0036-8075 . - DOI : 10.1126 / science.141.3580.532 . - . - PMID 17738629 .
- ↑ Advances in Inorganic Chemistry / AG Sykes. - Academic Press, 1998. - Vol. 46. - P. 67. - ISBN 0-12-023646-X .
- ↑ Holleman, Arnold Frederik & Wiberg, Egon (2001), Wiberg, Nils, ed., Inorganic Chemistry , San Diego / Berlin: Academic Press / De Gruyter, p. 399, ISBN 0-12-352651-5