Iron(III) | 合法藥品大搜索

Inchemistry,iron(III)referstotheelementironinits+3oxidationstate.Inioniccompounds...makeironinthesoilavailabletoplants.CitratealsosolubilizesferricionatneutralpH,althoughitscomplexesarelessstablethanthoseofEDTA.

The element iron in its +3 oxidation state

In chemistry, iron(III) or ferric refers to the element iron in its +3 oxidation state. Ferric chloride is an alternative name for iron(III) chloride (FeCl3). The adjective ferrous is used instead for iron(II) salts, containing the cation Fe2+. The word ferric is derived from the Latin word ferrum, meaning "iron".

Although often abbreviated as Fe3+, that naked ion does not exist except under extreme conditions. Iron(III) centres are found in many compounds and coordination complexes, where Fe(III) is bonded to several ligands. A molecular ferric complex is the anion ferrioxalate, [Fe(C2O4)3]3−, with three bidentate oxalate ions surrounding the Fe core. Relative to lower oxidation states, ferric is less common in organoiron chemistry, but the ferrocenium cation [Fe(C2H5)2]+ is well known.

All known forms of life require ir...