Osmium(III) chloride

Osmium(III) chloride is an inorganic chemical compound of osmium metal and chlorine with the chemical formula OsCl3.[1][2]

Osmium(III) chloride
Names
Other names
trichloroosmium, osmium trichloride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.247
EC Number
  • 236-587-7
  • InChI=1S/3ClH.Os/h3*1H;/q;;;+3/p-3
    Key: UAIHPMFLFVHDIN-UHFFFAOYSA-K
  • Cl[Os](Cl)Cl
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

Synthesis

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

2Os + 3Cl2 → 2OsCl3

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

2OsCl4 → 2OsCl3 + Cl2

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 OsCl3·3H2O 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
  1. "Osmium(III) chloride". Sigma Aldrich. Retrieved 31 March 2023.
  2. Lide, David R. (19 June 2003). 1998 Freshman Achievement Award. CRC Press. p. 4-79. ISBN 978-0-8493-0594-8. Retrieved 31 March 2023.
  3. "Osmium(III) chloride". heraeus.com. Retrieved 31 March 2023.
  4. "Osmium(III) chloride hydrate, Thermo Scientific Chemicals | Fisher Scientific". fishersci.se. Retrieved 31 March 2023.
  5. "Osmium(III) chloride hydrate". Sigma Aldrich. Retrieved 31 March 2023.
  6. Bell, Andrew G.; Koźmiński, Wiktor; Linden, Anthony; von Philipsborn, Wolfgang (1996). "187Os NMR Study of (η6-Arene)osmium(II) Complexes: Separation of Electronic and Steric Ligand Effects". Organometallics. 15 (14): 3124–3135. doi:10.1021/om960053i.
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