Sodium ferrioxalate

Sodium ferrioxalate is a chemical compound with the formula Na 3Fe(C 2O 4) 3. It is also called sodium oxalatoferrate or sodium trisoxalatoferrate.

The compound is a salt consisting of ferrioxalate anions, [Fe(C 2O 4) 3]3−, and sodium cations Na+. The anion is a transition metal complex consisting of an iron atom in the +3 oxidation state and three bidentate oxalate ions C 2O2− 4 anions acting as ligands.

The ferrioxalate anion is sensitive to light and higher-energy electromagnetic radiation, which causes the decomposition of one oxalate to carbon dioxide CO 2 and reduction of the iron(III) atom to iron(II).