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

Synthesis

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

OsO₄ + 4H₂S → OsS₄ + 4H₂O

Physical properties

Osmium tetrasulfide forms dark brown crystals. It does not dissolve in cold water. It is soluble in dilute nitric acid. It forms hydrates.

Osmium tetrasulfide decomposes upon melting.

References

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.

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