Sodium ferrioxalate

Sodium ferrioxalate
Sodium ferrioxalate
Names
IUPAC name
Sodium iron(III) oxalate, sodium oxalatoferrate, sodium trisoxalatoferrate
Other names
Sodium ferrioxalate

Sodium ferric oxalate
Sodium trisoxalatoferrate (III)

Sodium oxalatoferrate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.008.267 Edit this at Wikidata
EC Number
  • 209-092-9
  • InChI=1S/3C2H2O4.Fe.3Na/c3*3-1(4)2(5)6;;;;/h3*(H,3,4)(H,5,6);;;;/q;;;+3;3*+1/p-6
    Key: XIPRSXSGWQCSHH-UHFFFAOYSA-H
  • O=C(C(=O)O1)O[Fe-3]123(OC(C(=O)O2)=O)OC(C(=O)O3)=O.[Na+].[Na+].[Na+]
Properties
C6FeNa3O12
Molar mass 388.868 g·mol−1
Appearance lime green hydrated crystals
Density 1.97 g/cm3 at 17 °C
32.5pts per 100pts solvent, cold water, 182pts per 100pts, boiling water[1]
Structure
octahedral
0 D
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Corrosive. Eye, respiratory and skin irritant.
GHS labelling:
GHS07: Exclamation mark
Warning
H302, H312
P264, P270, P280, P301+P312, P302+P352, P312, P322, P330, P363, P501
Related compounds
Other anions
 Potassium ferrioxalate
Related compounds
 Iron(II) oxalate
Iron(III) oxalate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Sodium ferrioxalate are inorganic compounds with the formula Na3Fe(C2O4)3(H2O)n. The pentahydrate has been characterized by X-ray crystallography. In contrast the potassium, ammonium, and rubidium salts crystallize from water as their trihydrates.[2]

The compound is a salt consisting of ferrioxalate anions, [Fe(C2O4)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 C2O2−4 anions serving as ligands.

The ferrioxalate anion is sensitive to light and higher-energy electromagnetic radiation, which causes the decomposition of one oxalate to carbon dioxide CO2 and reduction of the iron(III) atom to iron(II).

  1. ^ Weast, Robert C., ed. (1981). CRC Handbook of Chemistry and Physics (62nd ed.). Boca Raton, FL: CRC Press. p. B-149. ISBN 0-8493-0462-8.
  2. ^ Armentano, Donatella; De Munno, Giovanni; Lloret, Francesc; Julve, Miguel (2005). "Bis and tris(oxalato)ferrate(III) complexes as precursors of polynuclear compounds". CrystEngComm. 7 (7): 57. doi:10.1039/b417251e.