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| Identifiers | |
|---|---|
3D model (JSmol) | |
| ChemSpider |
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| ECHA InfoCard | 100.043.101 |
| EC Number |
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| |
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| Properties | |
| AgPF6 | |
| Molar mass | 252.83 g/mol |
| Appearance | Off-white powder |
| Melting point | 102 °C (216 °F; 375 K) |
| Solubility | soluble in organic solvents |
| Hazards | |
| GHS labelling: | |
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| Danger | |
| H314 | |
| P260,P264,P280,P301+P330+P331,P303+P361+P353,P304+P340,P305+P351+P338,P310,P321,P363,P405,P501 | |
| NFPA 704 (fire diamond) | |
| Safety data sheet (SDS) | External MSDS |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Silver hexafluorophosphate, sometimes referred to "silver PF-6," is aninorganic compound with thechemical formula AgPF6.
Silver hexafluorophosphate is a commonly encountered reagent ininorganic andorganometallic chemistry. It is commonly used to replacehalide ligands with theweakly coordinatinghexafluorophosphate anion; abstraction of the halide is driven by the precipitation of the appropriatesilver halide. Illustrative is the preparation of acetonitrile complexes from a metal bromide, a reaction that would typically be conducted in a solution ofacetonitrile:
Ligands with tightly-bound halide atoms coordinate the silver, but do not themselves decompose:[1]
AgPF6 can act as an oxidant, forming silver metal as a by-product. For example, in solution in dichloromethane,ferrocene is oxidised toferrocenium hexafluorophosphate:[2]
In terms of their properties and applications,silver tetrafluoroborate (AgBF4) and the hexafluoroantimonate (AgSbF6) are similar to AgPF6.
Silver nitrate is a traditional and less expensive halide abstraction reagent, as indicated by its widespread use in qualitative tests for halides.
Relative to AgPF6, however, silver nitrate is poorly soluble in weakly basic solvents: thenitrate anion is Lewis basic and presents an interfering ligand that precludes its use in stringent applications.
