Sodium hexachloroosmate

Sodium hexachloroosmate
	Two-dimensional representation of disodium hexachloroosmate salt
	A solution of sodium hexachloroosmate
Identifiers
CAS Number	207683-17-8 (hydrate) ; anhydrous: 1307-81-9 ;
3D model (JSmol)	monohydrate: Interactive image; anhydrous: Interactive image;
ChemSpider	monohydrate: 32819419; anhydrous: 21171820;
ECHA InfoCard	100.013.775
PubChem CID	monohydrate: 71311526; anhydrous: 15762360;
CompTox Dashboard (EPA)	DTXSID50156687 ;
	InChI monohydrate: InChI=1S/6ClH.2Na.H2O.Os/h61H;;;1H2;/q;;;;;;2+1;;+4/p-6 Key: PQSWAUXOSHGRPF-UHFFFAOYSA-H; anhydrous: InChI=1S/6ClH.2Na.Os/h61H;;;/q;;;;;;2+1;+4/p-6 Key: PVTVRPSPEDISMV-UHFFFAOYSA-H;
	SMILES monohydrate: O.[Na+].[Na+].Cl[Os-2](Cl)(Cl)(Cl)(Cl)Cl; anhydrous: [Na+].[Na+].[Cl-].[Cl-].Cl[Os](Cl)(Cl)Cl;
Properties
Chemical formula	Cl6Na2Os
Molar mass	448.91 g·mol−1
Appearance	red solid
Density	3.221 g/cm3
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Sodium hexachloroosmate is the inorganic compound with the formula Na₂OsCl₆. A red solid, it is the disodium salt of the osmium(IV) complex [OsCl₆]²⁻. The anion is an octahedral complex with Os-Cl distance of 2.325(3) Å, as established by X-ray crystallography.^[1] The compound can be prepared by reaction of a suspension of osmium metal in molten sodium chloride with chlorine:^[2]

Os + 2 NaCl + 2 Cl₂ → Na₂OsCl₆

Hexachloroosmate is paramagnetic, with a low-spin d⁴ configuration.

[1]

[2]

Sodium hexachloroosmate

References

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