What is fe cn 6?

Fe(CN)6 is a coordination compound containing iron (Fe) and cyanide (CN) ligands. The Fe atom is in the center of the molecule and coordinated by six CN ligands, forming an octahedral geometry. This compound is often used as a precursor to the pigment Prussian blue, which has applications in dyeing fabrics and as a blue ink. The Fe(CN)6 complex is also known to be toxic and can release toxic cyanide ions if improperly handled or stored.