Ferrocyanide

Ferrocyanide is the name of 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. It is of commercial interest as a precursor to the pigment Prussian blue and, as its potassium salt, an anticaking agent.

Ferrocyanide ion
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
KEGG
PubChem CID
UNII
  • InChI=1S/6CN.Fe/c6*1-2;/q6*-1;+2
    Key: UETZVSHORCDDTH-UHFFFAOYSA-N
SMILES
  • [C-]#N.[C-]#N.[C-]#N.[C-]#N.[C-]#N.[C-]#N.[Fe+2]
Properties
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
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