Ferrate loosely refers to a material that can be viewed as containing anionic

iron Iron is a chemical element; it has symbol Fe () and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, forming much of Earth's o ...

complexes. Examples include tetrachloroferrate ( eCl₄sup>2−), oxyanions ( ), tetracarbonylferrate ( e(CO)₄sup>2−), the organoferrates. The term ferrate derives . Some ferrates are called super-iron by some and have uses in battery applications and as an oxidizer. It can be used to clean water safely from a wide range of pollutants, including viruses, microbes, arsenic, sulfur-containing compounds, cyanides and other nitrogen-containing contaminants, many organic compounds, and algae. File:Disodium tetracarbonylferrate.png, Disodium salt of tetracarbonylferrate File:Ferrate ion.svg, Structure of

ferrate(VI) Ferrate(VI) is the inorganic anion with the chemical formula eO4sup>2−. It is photosensitive, contributes a pale violet colour to compounds and solutions containing it and is one of the strongest water-stable oxidizing species known. Although ...

, eO₄sup>2− File:1-Butyl-3-methylimidazolium tetrachloroferrate.svg, 1-Butyl-3-methylimidazolium salt of eCl₄sup>− File:Potassium-trioxalatoferrate(III)-2D.png,

Potassium tris(oxalato)ferrate Potassium ferrioxalate, also called potassium trisoxalatoferrate or potassium tris(oxalato)ferrate(III) is a chemical compound with the formula . It often occurs as the trihydrate . Both are crystalline compounds, lime green in colour. The comp ...

References

{{Authority control Iron compounds Anions Ferrates