Iron: Properties


Compound Substances

Oxidation StateSubstances
Fe-IIrare Fe (CO)42-
Fe-Irare Fe2 (CO)82-
Fe0Fe (CO)5
FeIrare [Fe (NO)(H2O)5 ]2+
FeIIFeO, FeS2 (= FeIIS22-), Fe (OH)2 ,
[Fe (H2O)6 ]2+ (aq), FeF2 , Fe (C5H5 )2 , etc.
FeIIIFe2O3, Fe3O4 (= FeIIO.Fe2IIIO3), FeF3 ,
FeCl3 , FeO (OH), [Fe (H2O)6 ]3+ (aq), etc.
FeIVrare, some complexes
FeVFeO43- ?
FeVIFeO42-