Chemistry:Osmium(III) chloride

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Osmium(III) chloride
Kristallstruktur Chrom(III)-chlorid.png
Names
Other names
trichloroosmium, osmium trichloride
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 236-587-7
Properties
Cl3Os
Molar mass 296.58 g·mol−1
Appearance black-brown crystals
Melting point 560 °C (1,040 °F; 833 K)
soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Osmium(III) chloride is an inorganic chemical compound of osmium metal and chlorine with the chemical formula OsCl
3
.[1][2]

Synthesis

Osmium(III) chloride can be made by a reaction of chlorine with osmium:

2Os + 3Cl
2
→ 2OsCl
3

It can also be made by heating of osmium(IV) chloride:

2OsCl
4
→ 2OsCl
3
 +
Cl
2

Physical properties

Sample of commercial osmium trichloride trihydrate.

Osmium(III) chloride forms black-brown crystals.[3]

Osmium(III) chloride forms a hydrate of the composition OsCl
3
 · 3H2O
with dark green crystals.[4]

Uses and reactions

Osmium(III) chloride hydrate is used as a precursor material for the production of dichlorodihydridoosmium complex compounds and other compounds.[5]

It is the precursor to a variety of arene complexes.[6]

References