Ferrocyanide

Ferrocyanide ion
Identifiers
CAS Number	13408-63-4 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:5032;
ChemSpider	10446887;
KEGG	C01913;
PubChem CID	9552077;
UNII	FLX0VIC39Y ;
CompTox Dashboard (EPA)	DTXSID0065436 ;
	InChI InChI=1S/6CN.Fe/c61-2;/q6-1;+2 Key: UETZVSHORCDDTH-UHFFFAOYSA-N;
	SMILES N#C[Fe-2](C#N)(C#N)(C#N)(C#N)C#N;
Properties
Chemical formula	C6FeN64−
Molar mass	211.955 g·mol−1
Related compounds
Related compounds	Ferricyanide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Ferrocyanide is the anion [Fe(CN)₆]⁴⁻. Salts of this coordination complex give yellow solutions. It is usually available as the salt potassium ferrocyanide, which has the formula K₄Fe(CN)₆. [Fe(CN)₆]⁴⁻ is a diamagnetic species, featuring low-spin iron(II) center in an octahedral ligand environment. Although many salts of cyanide are highly toxic, ferro- and ferricyanides are less toxic because they tend not to release free cyanide.^[1] It is of commercial interest as a precursor to the pigment Prussian blue and, as its potassium salt, an anticaking agent.^[2]

^ Holleman, A. F.; Wiberg, E. (2001). Inorganic Chemistry. San Diego: Academic Press. ISBN 0-12-352651-5.
^ Gail, E.; Gos, S.; Kulzer, R.; Lorösch, J.; Rubo, A.; Sauer, M.; Kellens, R.; Reddy, J.; Steier, N.; Hasenpusch, W. (2011). "Cyano Compounds, Inorganic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a08_159.pub3. ISBN 978-3-527-30673-2.

[Holl-1] Holleman, A. F.; Wiberg, E. (2001). Inorganic Chemistry. San Diego: Academic Press. ISBN 0-12-352651-5.

[Ullmann-2] Gail, E.; Gos, S.; Kulzer, R.; Lorösch, J.; Rubo, A.; Sauer, M.; Kellens, R.; Reddy, J.; Steier, N.; Hasenpusch, W. (2011). "Cyano Compounds, Inorganic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a08_159.pub3. ISBN 978-3-527-30673-2.

[1]

[2]