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Osmium tetrasulfide

From Wikipedia, the free encyclopedia
Osmium tetrasulfide
Names
Other names
Osmium(VIII) sulphide, tetrakis(sulfanylidene)osmium
Identifiers
3D model (JSmol)
  • InChI=1S/Os.4S
    Key: CQZYSTFQZYMZKW-UHFFFAOYSA-N
  • S=[Os](=S)(=S)=S
Properties
OsS4
Molar mass 318.47 g·mol−1
Appearance dark brown crystals
insoluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Osmium tetrasulfide is an inorganic compound, a salt of osmium metal and hydrogen sulfide acid with the chemical formula OsS4.[1]

Synthesis

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Osmium tetrasulfide can be made by passing hydrogen sulfide through acidified solutions of osmium tetroxide:[2]

OsO4 + 4H2S → OsS4 + 4H2O

Physical properties

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Osmium tetrasulfide forms dark brown crystals, does not dissolve in cold water. It is soluble in dilute HNO3.[3] It forms hydrates.[4]

Osmium tetrasulfide decomposes upon melting.[5]

References

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  1. ^ Bloxam, Charles Loudon (1888). Chemistry, Inorganic and Organic: With Experiments. P. Blakiston. p. 447. Retrieved 4 April 2023.
  2. ^ Satya, Prakash (2013). Advanced Chemistry of Rare Elements. S. Chand Publishing. p. 615. ISBN 978-81-219-4254-6. Retrieved 4 April 2023.
  3. ^ Gmelin, Leopold (1852). Hand Book of Chemistry. Cavendish Society. p. 411. Retrieved 4 April 2023.
  4. ^ Comey, Arthur Messinger (1896). A Dictionary of Chemical Solubilities: Inorganic. Macmillan and Company. p. 275. Retrieved 4 April 2023.
  5. ^ Sangeeta, D. (25 June 1997). Inorganic Materials Chemistry Desk Reference. CRC Press. p. 266. ISBN 978-0-8493-8900-9. Retrieved 4 April 2023.