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| Names | |
|---|---|
| IUPAC name Ferrocenium tetrafluoroborate | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.156.161 |
| EC Number |
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| Properties | |
| C10H10BFeF4 | |
| Molar mass | 272.84 g/mol |
| Appearance | dark blue powder |
| Melting point | 178 °C (352 °F; 451 K) (decomposes) |
| Solubility inacetonitrile | Soluble[citation needed] |
| Hazards[1] | |
| GHS labelling: | |
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| Danger | |
| H314 | |
| P280,P305+P351+P338,P310 | |
| Safety data sheet (SDS) | External MSDS |
| Related compounds | |
Related compounds | Ferrocene |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Ferrocenium tetrafluoroborate is anorganometallic compound with the formula [Fe(C5H5)2]BF4. This salt is composed of the cation [Fe(C5H5)2]+ and thetetrafluoroborateanion (BF−
4). The relatedhexafluorophosphate is also a popular reagent with similar properties. The ferrocenium cation is often abbreviated Fc+ orCp2Fe+. The salt is deep blue in color andparamagnetic.Ferrocenium salts are sometimes used as one-electron oxidizing agents, and the reduced product,ferrocene, is inert and readily separated from ionic products. The ferrocene–ferrocenium couple is often used as a reference in electrochemistry. The standard potential of ferrocene-ferrocenium is dependent on specific electrochemical conditions.[2]
Commercially available, this compound may be prepared by oxidizing ferrocene typically with ferric salts followed by addition offluoroboric acid.[2] A variety of other oxidants work well also, such asnitrosyl tetrafluoroborate.[3] Many analogous ferrocenium salts are known.[4]
According toX-ray crystallography, the structures of the metallocene component of FcBF4 and the parent ferrocene are very similar. The Fe-C distances in the cation are 209.5pm, about 2% longer than the Fe-C distances in ferrocene.[5]
