Osmium diammine hydroxide: Difference between revisions
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'''Osmium diammine hydroxide'''<ref>{{cite book|author1=J. Newton Friend|chapter=Osmium and its compounds|title=A textbook of inorganic chemistry, vol.IX Part I Cobalt, Nickel, and The Elements of The Platinum Group|publisher=Charles Griffin and Company, Limited|date=1920|place=London|pages= |
'''Osmium diammine hydroxide'''<ref>{{cite book|author1=J. Newton Friend|chapter=Osmium and its compounds|title=A textbook of inorganic chemistry, vol.IX Part I Cobalt, Nickel, and The Elements of The Platinum Group|publisher=Charles Griffin and Company, Limited|date=1920|place=London|pages=231|url=https://dn790003.ca.archive.org/0/items/textbookinorgani00libg_516/textbookinorgani00libg_516.pdf|access-date=17 June 2025}}</ref> is an inorganic [[chemical compound]] with the formula {{chem2|[OsO(NH3)2](OH)2}}. It exists as a brown powder that is insoluble in water. |
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==Synthesis== |
==Synthesis== |
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Revision as of 23:14, 17 June 2025
 | This article possibly contains original research. (June 2025) |
 Osmium diammine hydroxide stored in water.
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| Names | |
|---|---|
| IUPAC name
Osmium oxydiamino-dihydroxide
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| Other names
Oxyosmiumamine hydroxide, osmosyldiammine hydroxide, ammonio-sesquioxide of osmium
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| Properties | |
| H8N2O3Os | |
| Molar mass | 274.31 g·mol−1 |
| Appearance | brown powder |
| Melting point | (decomposes)[1] |
| insoluble[2] | |
| Solubility | dissolves in acids |
| Hazards | |
| GHS labelling: | |
| |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Osmium diammine hydroxide[3] is an inorganic chemical compound with the formula [OsO(NH3)2](OH)2. It exists as a brown powder that is insoluble in water.
Synthesis
Osmium diammine hydroxide can be produced by reducing osmium tetroxide with aqueous ammonia at 50°C.[4] It can also be produced by treating hexachloroosmates with ammonia.[5]
Properties
Osmium diammine hydroxide decomposes explosively when heated in air, releasing nitrogen gas.[6] It dissolves in acids to produce corresponding salts, such as osmium diammine chloride, [OsO(NH3)2]Cl2.[7]
Reactions
When heated to boiling in concentrated alkali hydroxide solutions, osmium diammine hydroxide releases ammonia and decomposes to osmium dioxide.[8]
- [OsO(NH3)2](OH)2 → OsO2 + 2NH3 + H2O
References
- ^ Gmelin, Leopold (1852). Hand Book of Chemistry. Cavendish Society. p. 415. Retrieved 16 June 2025.
- ^ Comey, Arthur Messinger (1896). A Dictionary of Chemical Solubilities: Inorganic. Macmillan and Company. p. 279. Retrieved 16 June 2025.
- ^ J. Newton Friend (1920). "Osmium and its compounds". A textbook of inorganic chemistry, vol.IX Part I Cobalt, Nickel, and The Elements of The Platinum Group (PDF). London: Charles Griffin and Company, Limited. p. 231. Retrieved 17 June 2025.
- ^ Prakash Satya (2013). "Platinum Metals-IV:Osmium". Advanced Chemistry of Rare Elements, 5th Ed. India: S Chand and Company Limited. pp. 611–612.
- ^ J. Newton Friend (1920). "Osmium and its compounds". A textbook of inorganic chemistry, vol.IX Part I Cobalt, Nickel, and The Elements of The Platinum Group (PDF). London: Charles Griffin and Company, Limited. p. 216. Retrieved 17 June 2025.
- ^ J.W. Mellor (May 1936). "Osmium". A comprehensive treatise on inorganic and theoretical chemistry, Volume 15. London: Longmans, Green and Co. p. 704. Retrieved 16 June 2025.
- ^ J.W. Mellor (May 1936). "Osmium". A comprehensive treatise on inorganic and theoretical chemistry, Volume 15. London: Longmans, Green and Co. p. 720. Retrieved 16 June 2025.
- ^ J.W. Mellor (May 1936). "Osmium". A comprehensive treatise on inorganic and theoretical chemistry, Volume 15. London: Longmans, Green and Co. p. 705. Retrieved 16 June 2025.