Nitrosonium octafluoroxenate(VI)

Nitrosonium octafluoroxenate(VI) is a chemical compound of xenon with nitrogen, oxygen, and fluorine, having formula (NO)
₂XeF
₈. It is an ionic compound containing well-separated nitrosonium cations (NO⁺) and octafluoroxenate(VI) anions (XeF²⁻
₈). The molecular geometry of the octafluoroxenate(VI) ion is square antiprismatic, having Xe–F bond lengths of 1.971 Å, 1.946 Å, 1.958 Å, 2.052 Å, and 2.099 Å.^[1]

Nitrosonium octafluoroxenate(VI)

The square antiprismatic [XeF8]2− anion in (NO)2XeF8[1]
Names
IUPAC name Nitrosonium octafluoroxenate(VI)
Identifiers
3D model (JSmol)	Interactive image
InChI InChI=1S/F8Xe.2NO/c1-9(2,3,4,5,6,7)8;2*1-2/q-2;2*+1 Key: UZLZIYXSQHCOGO-UHFFFAOYSA-N
SMILES [N]#[O+].[N]#[O+].F[Xe-2](F)(F)(F)(F)(F)(F)[F]
Properties
Chemical formula	(NO) 2XeF 8
Density	3.354 g/cm3
Solubility in water	Reacts
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

It is synthesized by the reaction of xenon hexafluoride (XeF
₆) with nitrosyl fluoride (NOF):^[2]

XeF
₆ + 2 NOF → (NO)
₂XeF
₈

Other compounds containing the octafluoroxenate(VI) ion include its alkali metal salts, including Cs₂XeF₈ and Rb₂XeF₈, which are stable up to 400 °C.^[3][4]