Silver subfluoride | |
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silver(0,I) fluoride |
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Identifiers | |
CAS number | 1302-01-8 |
Properties | |
Molecular formula | Ag2F |
Molar mass | 234.734 g/mol |
Appearance | Bronze-colored crystals with green luster |
Density | 8.6 g/cm3, solid |
Melting point |
90 °C. decomposition |
(verify) (what is: / ?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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Infobox references |
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 fluoride:[1]
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.
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]
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