Ferric oxalate

Ferric oxalate
Names
Systematic IUPAC name
iron(3+) ethanedioate (2:3)
Other names
Iron(III) oxalate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.019.047 Edit this at Wikidata
EC Number
  • 220-951-7
UNII
  • InChI=1S/3C2H2O4.2Fe/c3*3-1(4)2(5)6;;/h3*(H,3,4)(H,5,6);;/q;;;2*+3/p-6
  • [Fe+3].[Fe+3].O=C([O-])C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O
Properties
C6Fe2O12
Molar mass 375.747 g/mol
Appearance Pale yellow solid (anhydrous)
Lime green solid (hexahydrate)
Odor odorless
Melting point 365.1 °C (689.2 °F)
slightly soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Ferric oxalate, also known as iron(III) oxalate, refers to inorganic compounds with the formula Fe2(C2O4)3(H2O)x but could also refer to salts of [Fe(C2O4)3]3-. Fe2(C2O4)3(H2O)x are coordination polymers with varying degrees of hydration. The coordination complex with the formula [Fe(C2O4)3]3- forms a variety of salts, a well-known example being potassium ferrioxalate. This article emphasizes the coordination polymers.