Argonium

Argonium
Names
	IUPAC name Argonium ion
	Other names Hydridoargon(1+); argon hydride cation; protonated argon
Identifiers
CAS Number	12254-68-1 ;
3D model (JSmol)	Interactive image;
CompTox Dashboard (EPA)	DTXSID801316319 ;
	InChI InChI=1S/ArH/h1H/q+1 [NIST] Key: TVQSUVFYDVJWLI-UHFFFAOYSA-N [NIST];
	SMILES [ArH+];
Properties
Chemical formula	ArH+;
Molar mass	40.956 g·mol−1
Conjugate base	Argon
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Argonium (also called the argon hydride cation, the hydridoargon(1+) ion, or protonated argon; chemical formula ArH⁺) is a cation combining a proton and an argon atom. It can be made in an electric discharge, and was the first noble gas molecular ion to be found in interstellar space.^[3]

^ NIST Computational Chemistry Comparison and Benchmark Database, NIST Standard Reference Database Number 101. Release 19, April 2018, Editor: Russell D. Johnson III. http://cccbdb.nist.gov/
^ Neufeld, David A.; Wolfire, Mark G. (2016). "The Chemistry of Interstellar Argonium and Other Probes of the Molecular Fraction in Diffuse Clouds". The Astrophysical Journal. 826 (2): 183. arXiv:1607.00375. Bibcode:2016ApJ...826..183N. doi:10.3847/0004-637X/826/2/183. S2CID 118493563.
^ Quenqua, Douglas (13 December 2013). "Noble Molecules Found in Space". The New York Times. Retrieved 26 September 2016.

[1] NIST Computational Chemistry Comparison and Benchmark Database, NIST Standard Reference Database Number 101. Release 19, April 2018, Editor: Russell D. Johnson III. http://cccbdb.nist.gov/

[2] Neufeld, David A.; Wolfire, Mark G. (2016). "The Chemistry of Interstellar Argonium and Other Probes of the Molecular Fraction in Diffuse Clouds". The Astrophysical Journal. 826 (2): 183. arXiv:1607.00375. Bibcode:2016ApJ...826..183N. doi:10.3847/0004-637X/826/2/183. S2CID 118493563.

[3] Quenqua, Douglas (13 December 2013). "Noble Molecules Found in Space". The New York Times. Retrieved 26 September 2016.

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Names

IUPAC name Argonium ion
Other names Hydridoargon(1+) argon hydride cation^[1] protonated argon^[2]
Identifiers
CAS Number	12254-68-1^Y
3D model (JSmol)	Interactive image
CompTox Dashboard (EPA)	DTXSID801316319
InChI InChI=1S/ArH/h1H/q+1^Y[NIST] Key: TVQSUVFYDVJWLI-UHFFFAOYSA-N^Y[NIST]
SMILES [ArH+]
Properties
Chemical formula	ArH⁺
Molar mass	40.956 g·mol⁻¹
Conjugate base	Argon
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references