Diargon

Diargon
Names
	Other names argon dimer
Identifiers
CAS Number	12595-59-4 ;
3D model (JSmol)	Interactive image;
PubChem CID	6432035;
	InChI InChI=1S/2Ar Key: XMPZLAQHPIBDSO-UHFFFAOYSA-N;
	SMILES [Ar].[Ar];
Properties
Chemical formula	Ar2
Molar mass	79.896 g·mol−1
Appearance	transparent gas
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Diargon or the argon dimer is a molecule containing two argon atoms. Normally, this is only very weakly bound together by van der Waals forces (a van der Waals molecule). However, in an excited state, or ionised state, the two atoms can be more tightly bound together, with significant spectral features. At cryogenic temperatures, argon gas can have a few percent of diargon molecules.^[1]

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