Gold(III) fluoride
Chemical compound
From Wikipedia, the free encyclopedia
Gold(III) fluoride is an inorganic compound of gold and fluorine with the molecular formula AuF3. It is an orange solid that sublimes at 300 °C.[4] It is a powerful fluorinating agent. It is very sensitive to moisture, yielding gold(III) hydroxide and hydrofluoric acid.
| Names | |
|---|---|
| IUPAC name
Gold(III) fluoride | |
| Other names
Gold trifluoride Auric fluoride | |
| Identifiers | |
3D model (JSmol) |
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| ChEBI | |
| ChemSpider | |
PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| AuF3 | |
| Molar mass | 253.961779 g·mol−1 |
| Appearance | orange-yellow hexagonal crystals |
| Density | 6.75 g/cm3 |
| Melting point | sublimes above 300 °C |
| Reacts[2][3] | |
| +74·10−6 cm3/mol | |
| Structure | |
| Hexagonal, hP24 | |
| P6122, No. 178 | |
| Thermochemistry | |
Std enthalpy of formation (ΔfH⦵298) |
−363.3 kJ/mol |
| Related compounds | |
Other anions |
Gold(III) chloride Gold(III) bromide |
Other cations |
Silver fluoride Copper(II) fluoride Mercury(II) fluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Preparation
Structure
The crystal structure of AuF3 consists of spirals of square-planar AuF4 units.[5]
| AuF3 unit cell | neighbouring (AuF3)n helices | distorted octahedral coordination of gold by six fluorines | top-down view of an (AuF3)n helix | side view of an (AuF3)n helix |
