Ferrocenium tetrafluoroborate

Ferrocenium tetrafluoroborate
Names
	IUPAC name Ferrocenium tetrafluoroborate
	Other names FcBF4
Identifiers
CAS Number	1282-37-7 ;
3D model (JSmol)	Interactive image;
ChemSpider	69007671;
ECHA InfoCard	100.156.161
EC Number	627-836-4;
PubChem CID	124204127 charge error;
CompTox Dashboard (EPA)	DTXSID90746541 ;
	InChI InChI=1S/2C5H5.BF4.Fe/c21-2-4-5-3-1;2-1(3,4)5;/h21-5H;;/q3*-1;+3 Key: HOUMJOPJFCQTEL-UHFFFAOYSA-N;
	SMILES C1=C[CH-]C=C1.[Fe+3].C2=C[CH-]C=C2.F[B-](F)(F)F;
Properties
Chemical formula	C10H10BFeF4
Molar mass	272.84 g/mol
Appearance	dark blue powder
Melting point	178 °C (352 °F; 451 K) (decomposes)
Solubility in acetonitrile	Soluble
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H314
Precautionary statements	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 their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Ferrocenium tetrafluoroborate is an organometallic compound with the formula [Fe(C₅H₅)₂]BF₄. This salt is composed of the cation [Fe(C₅H₅)₂]⁺ and the tetrafluoroborate anion (BF⁻
₄). The related hexafluorophosphate is also a popular reagent with similar properties. The ferrocenium cation is often abbreviated Fc⁺ or Cp₂Fe⁺. The salt is deep blue in color and paramagnetic.

Ferrocenium salts are one-electron oxidizing agents, and the reduced product, ferrocene, is inert and often readily separated from ionic products. The ferrocene–ferrocenium couple is used as a reference in electrochemistry. The standard potential of ferrocene-ferrocenium is dependent on specific electrochemical conditions.