Xenic acid

Xenic acid

Structural formula Ball-and-stick model of xenic acid
Identifiers
CAS Number	1402134-83-1  N
3D model (JSmol)	Interactive image
ChemSpider	10466143  Y
PubChem CID	23422578
CompTox Dashboard (EPA)	DTXSID701027094
InChI InChI=1S/H2O4Xe/c1-5(2,3)4/h1-2H N Key: HRLLZBGOCZURJC-UHFFFAOYSA-N N InChI=1/H2O4Xe/c1-5(2,3)4/h1-2H Key: HRLLZBGOCZURJC-UHFFFAOYAW
SMILES O[Xe](O)(=O)=O
Properties
Chemical formula	H2XeO4
Molar mass	197.31 g/mol
Acidity (pKa)	≈10 [1]
Related compounds
Related compounds	Perxenic acid Xenon trioxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N  verify  (what is  YN ?) Infobox references

Xenic acid is a proposed noble gas compound with the chemical formula H₂XeO₄ or XeO₂(OH)₂. It has not been isolated, and the published characterization data are ambiguous. ^[2]

Salts of xenic acid are called xenates, containing the HXeO⁻
₄ anion, such as monosodium xenate. They tend to disproportionate into xenon gas and perxenates: ^[3]

2 HXeO⁻
₄ + 2 OH⁻
→ XeO⁴⁻
₆ + Xe + O
_² + 2 H
_²O

The energy given off is sufficient to form ozone from diatomic oxygen:

3 O
_² (g) → 2 O
_³ (g)

Salts containing the deprotonated anion XeO²⁻
₄ are presently unknown. ^[3]

References

1. Perrin, D. D., ed. (1982) [1969]. Ionisation Constants of Inorganic Acids and Bases in Aqueous Solution. IUPAC Chemical Data (2nd ed.). Oxford: Pergamon (published 1984). Entry 262. ISBN   0-08-029214-3. LCCN   82-16524.
2. Claassen, Howard H.; Knapp, Geraldine. (1964). "Raman Spectrum of Xenic Acid". Journal of the American Chemical Society. 86 (12): 2341–2342. doi:10.1021/ja01066a008.
3. Egon Wiberg; Nils Wiberg; Arnold Frederick Holleman (2001). Inorganic chemistry. Academic Press. p. 399. ISBN   0-12-352651-5.

Further reading

• Bruno Jaselskis, Stanislaus Vas (May 1964). "Xenic Acid Reactions with vic-Diols". J. Am. Chem. Soc. 86 (10): 2078–2079. doi:10.1021/ja01064a041.