Osmium(II) chloride

Osmium(II) chloride
Names
	IUPAC name Osmium(II) chloride
	Other names Osmium dichloride
Identifiers
CAS Number	13444-92-3 ;
3D model (JSmol)	Interactive image;
ChemSpider	379789;
PubChem CID	429382;
	InChI Key: OAGAGESCFZXSJR-UHFFFAOYSA-L; InChI=1S/2ClH.Os/h2*1H;/q;;+2/p-2;
	SMILES Cl[Os]Cl;
Properties
Chemical formula	OsCl2
Molar mass	261.14 g/mol
Appearance	dark brown solid
Density	4.38 g/cm3
Melting point	450 °C (842 °F; 723 K)
Solubility in water	Almost insoluble
Related compounds
Other anions	Osmium dibromide
Other cations	Iron(II) chloride; Palladium(II) chloride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Osmium(II) chloride or osmium dichloride is an inorganic compound composed of osmium metal and chlorine with the chemical formula OsCl
₂.^[1]

Synthesis

Osmium(II) chloride can be prepared by disproportionation of osmium(III) chloride at 500 °C in vacuum.^[2]

2OsCl₃ → OsCl₄ + OsCl₂

Osmium(II) chloride is a hygroscopic dark brown solid that is insoluble in water.^[3]

It is soluble in ethanol and ether.^[4]

Osmium(II) chloride does not react with hydrochloric acid and sulfuric acid.

It reacts with CO at 220 °C:

OsCl₂ + 3CO → Os(CO)₃Cl₂

Osmium(II) chloride can be used for the catalytic production of trialkylamines.^[5]

^ Satya, Prakash (2013). Advanced Chemistry of Rare Elements. S. Chand Publishing. p. 613. ISBN 978-81-219-4254-6. Retrieved 30 March 2023.
^ Singh, G. (2007). Chemistry Of Lanthanides And Actinides. Discovery Publishing House. p. 307. ISBN 978-81-8356-241-6. Retrieved 30 March 2023.
^ Leddicotte, G. W. (1961). The Radiochemistry of Osmium. Subcommittee on Radiochemistry, National Academy of Sciences-National Research Council; available from the Office of Technical Services, Department of Commerce. p. 5. Retrieved 30 March 2023.
^ Comey, Arthur Messinger (1896). A Dictionary of chemical solubilities. Macmillan and Company. p. 275. Retrieved 30 March 2023.
^ Macintyre, Jane E. (5 December 1996). Dictionary of Inorganic Compounds, Supplement 4. CRC Press. p. 221. ISBN 978-0-412-75020-5. Retrieved 30 March 2023.