Formula Ag2F Density 8.6 g/cm³ | Molar mass 234.734 g/mol Melting point 90 °C | |
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Related compounds Appearance Bronze-colored crystals with green luster | ||
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:
Ag + AgF → Ag2FIt 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. The shortest distance between silver atoms is 299.6 pm (compared to 289 pm in the metal).
References
Silver subfluoride Wikipedia(Text) CC BY-SA