Potassium ferrooxalate information

Potassium ferrooxalate
Names
	IUPAC name Potassium iron(II) oxalate
	Other names potassium ferrooxalate; potassium bisoxalatoferrate(II)
Identifiers
CAS Number	28288-62-2 ;
3D model (JSmol)	Interactive image;
	InChI InChI=1S/2C2H2O4.Fe.2K/c23-1(4)2(5)6;;;/h2(H,3,4)(H,5,6);;;/q;;+2;2*+1/p-4 Key: LDRXJDFKHOUYMS-UHFFFAOYSA-J;
	SMILES [K+].[K+].O=C(-C(=O)O1)O[Fe-2]12OC(-C(=O)O2)=O;
Properties
Chemical formula	K; 2[Fe(C; 2O; 4); 2] (anhydrous); K; 2[Fe(C; 2O; 4); 2]·2H; 2O (dihydrate)
Appearance	orange-yellow solid (anhydrous), golden-yellow crystals (dihydrate)
Melting point	decomposes at 470 °C
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Potassium ferrooxalate, also known as potassium bisoxalatoferrate(II), is a salt with the formula K₂Fe(C₂O₄)₂(H₂O)_x. The anion is a transition metal oxalate complex, consisting of an atom of iron in the +2 oxidation state bound to oxalate (C
₂O²⁻
₄) ligands and water.^[2]

Anhydrous K₂Fe(C₂O₄)₂ has been prepared by hydrothermal methods from ferrous chloride. It is a coordination polymer with trigonal prismatic Fe(C₂O₄)₃ centers. Half of the oxalate ligands are bridging.^[3]

^ ^a ^b Cite error: The named reference ladr was invoked but never defined (see the help page).
^ Amanchar, Sara; Schweitzer, Thierry; Mazet, Thomas; Malaman, Bernard; Diop, Leopold V. B.; Francois, Michel (2023). "Structure of the new iron(II) oxalate potassium salt K₂Fe[(C₂O₄)₂(H₂O)₂]·0.18H₂O". Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials. 79 (4): 263–270. doi:10.1107/S2052520623004602. PMID 37347140. S2CID 259223071.
^ Hursthouse, Michael B.; Light, Mark E.; Price, Daniel J. (2004). "One-Dimensional Magnetism in Anhydrous Iron and Cobalt Ternary Oxalates with Rare Trigonal-Prismatic Metal Coordination Environment". Angewandte Chemie International Edition. 43 (4): 472–475. doi:10.1002/anie.200352406. PMID 14735538.

[ladr-1] Cite error: The named reference ladr was invoked but never defined (see the help page).

[2] Amanchar, Sara; Schweitzer, Thierry; Mazet, Thomas; Malaman, Bernard; Diop, Leopold V. B.; Francois, Michel (2023). "Structure of the new iron(II) oxalate potassium salt K₂Fe[(C₂O₄)₂(H₂O)₂]·0.18H₂O". Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials. 79 (4): 263–270. doi:10.1107/S2052520623004602. PMID 37347140. S2CID 259223071.

[3] Hursthouse, Michael B.; Light, Mark E.; Price, Daniel J. (2004). "One-Dimensional Magnetism in Anhydrous Iron and Cobalt Ternary Oxalates with Rare Trigonal-Prismatic Metal Coordination Environment". Angewandte Chemie International Edition. 43 (4): 472–475. doi:10.1002/anie.200352406. PMID 14735538.

Names
IUPAC name Potassium iron(II) oxalate
Other names potassium ferrooxalate potassium bisoxalatoferrate(II)
Identifiers
CAS Number	28288-62-2^Y
3D model (JSmol)	Interactive image
InChI InChI=1S/2C2H2O4.Fe.2K/c23-1(4)2(5)6;;;/h2(H,3,4)(H,5,6);;;/q;;+2;2*+1/p-4 Key: LDRXJDFKHOUYMS-UHFFFAOYSA-J
SMILES [K+].[K+].O=C(-C(=O)O1)O[Fe-2]12OC(-C(=O)O2)=O
Properties
Chemical formula	K ₂[Fe(C ₂O ₄) ₂] (anhydrous) K ₂[Fe(C ₂O ₄) ₂]·2H ₂O (dihydrate)
Appearance	orange-yellow solid (anhydrous), golden-yellow crystals (dihydrate) ^[1]
Melting point	decomposes at 470 °C ^[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references