Green rust
Generic name for various green-colored iron compounds / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Green rust?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
Green rust is a generic name for various green crystalline chemical compounds containing iron(II) and iron(III) cations, the hydroxide (HO−
) anion, and another anion such as carbonate (CO2−
3), chloride (Cl−
), or sulfate (SO2−
4), in a layered double hydroxide structure. The most studied varieties are[1]
- carbonate green rust – GR(CO2−
3): [Fe2+
4Fe3+
2(HO−
)12]2+ · [CO2−
3·2H
2O]2−.[2][3][4][5] - chloride green rust – GR(Cl−
): [Fe2+
3Fe3+
(HO−
)8]+ · [Cl−
·nH
2O]−.[4][5][6] - sulfate green rust – GR(SO2−
4): [Fe2+
4Fe3+
2(HO−
)12]2+ · [SO2−
4·2H
2O]2−.[5][7][8]
Other varieties reported in the literature are bromide Br−
,[7] fluoride F−
,[7] iodide I−
,[9] nitrate NO−
3,[10] and selenate.[11]
Green rust was first recognized as a corrosion crust on iron and steel surfaces.[2] It occurs in nature as the mineral fougerite.[1]