Silver subfluoride
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| Template:Longitem | Ag2F |
| Molar mass | 234.734 g/mol |
| Appearance | Bronze-colored crystals with green luster |
| Density | 8.6 g/cm3, solid |
| Melting point | Template:Chembox CalcTemperatures |
| Template:Longitem | Silver(I) fluoride Silver(II) fluoride Silver(III) fluoride |
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Silver subfluoride is the inorganic compound with the formula Ag2F. This is an unusual example of a compound where the oxidation state of silver is fractional. The compound is produced by the reaction of silver and silver(I) fluoride:[1]
- Ag + AgF → Ag2F
It forms small crystals with a bronze reflex and is a good conductor of electricity. On contact with water almost instant hydrolysis occurs with the precipitation of silver (Ag) powder.
Crystal structure
Ag2F adopts the anti-CdI2 crystal structure, i.e. the same structure as cadmium iodide, CdI2, but with "Ag½+" centres in the I− positions and F− in the Cd2+ positions.[2] The shortest distance between silver atoms is 299.6 pm (compared to 289 pm in the metal).[3]
References
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- ↑ Lee Poyer, Maurice Fielder, Hugh Harrison, Burl E. Bryant "Disilver Fluoride: (Silver “Subfluoride”)" Inorganic Syntheses, 1957, Volume 5, 92–94. Script error: No such module "CS1 identifiers".
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- ↑ Egon Wiberg, Arnold Frederick Holleman (2001) Inorganic Chemistry, Elsevier Template:ISBN
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