Sodium hexachloroosmate

Sodium hexachloroosmate is the inorganic compound with the formula Na2OsCl6. A red solid, it is the disodium salt of the osmium(VI) 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]

Sodium hexachloroosmate
Identifiers
3D model (JSmol)
ECHA InfoCard 100.013.775 Edit this at Wikidata
  • monohydrate: InChI=1S/6ClH.2Na.H2O.Os/h6*1H;;;1H2;/q;;;;;;2*+1;;+4/p-6
    Key: PQSWAUXOSHGRPF-UHFFFAOYSA-H
  • monohydrate: O.[Na+].[Na+].Cl[Os-2](Cl)(Cl)(Cl)(Cl)Cl
Properties
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).
Os + 2 NaCl + 2 Cl2 → Na2OsCl6

Hexachloroosmate is paramagnetic, with a low-spin d2 configuration.

References

edit
  1. ^ Rudnitskaya, O. V.; Kultyshkina, E. K.; Dobrokhotova, E. V.; Tereshina, T. A.; Popova, A. S.; Zubavichus, Ya. V.; Khrustalev, V. N. (2019). "Crystal Structure of Na2[OsCl6]". Journal of Structural Chemistry. 60 (7): 1086–1090. doi:10.1134/S0022476619070096. S2CID 199474647.
  2. ^ H. L. Grube (1963). "Sodium Hexachloroosmate(VI)". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2pages=1602. NY, NY: Academic Press.