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Cobalt(II) oxalate

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Cobalt(II) oxalate
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.011.281 Edit this at Wikidata
PubChem CID
UNII
CompTox Dashboard (EPA)
InChI
  • InChI=1S/C2H2O4.Co/c3-1(4)2(5)6;/h(H,3,4)(H,5,6);/q;+2/p-2Key: MULYSYXKGICWJF-UHFFFAOYSA-L
  • InChI=1/C2H2O4.Co/c3-1(4)2(5)6;/h(H,3,4)(H,5,6);/q;+2/p-2Key: MULYSYXKGICWJF-NUQVWONBAF
SMILES
  • C(=O)(C(=O)).
Properties
Chemical formula CoC2O4
Molar mass 146.9522 g/mol
Appearance gray/pink powder
Odor odorless
Density 3.01 g/cm
Melting point 250 °C (482 °F; 523 K) (decomposes)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). ☒N verify (what is  ?) Infobox references
Chemical compound

Cobalt(II) oxalate is the inorganic compound with the formula of CoC2O4. Like other simple inorganic oxalates, it is a coordination polymer. The oxalate ligands bridge of Co(OH2)2 centres. Each cobalt adopts octahedral coordination geometry.

It is used in the preparation of cobalt catalysts, and cobalt metal powder for powder-metallurgical applications. It is made in process of recycling lithium-ion batteries, where the cobalt is obtained from cathode material (LiCoO2) by leaching with sulfuric acid and then precipitated with ammonium oxalate.

Related compounds

Many cobalt(III) oxalate complexes are known, including and .

References

  1. Bacsa, J.; Eve, D.; Dunbar, K. R. (2005). "catena-Poly[[diaquacobalt(II)]-μ-oxalato]". Acta Crystallogr. C. 61 (Pt 1): m58 – m60. doi:10.1107/S0108270104030409. PMID 15640580.
  2. Kauffman, George B.; Takahashi, Lloyd T.; Sugisaka, Nobuyuki (1966). "Resolution of the Trioxalatocobaltate(III) Ion". Inorganic Syntheses. 8: 207–211. doi:10.1002/9780470132395.ch55.
  3. Worrell, J. H.; Kipp, E. B. (1972). "Resolution of the (Ethylenediamine)bis(oxalato)cobaltate(III) Ion". Inorganic Syntheses. 13: 195–202. doi:10.1002/9780470132449.ch40.
Cobalt compounds
Cobalt(I)
Cobalt(II)
Cobalt(0,III)
Cobalt(II,III)
Cobalt(III)
Cobalt(III,IV)
Cobalt(IV)
Cobalt(V)
Compounds of the oxalate ion
(H2C2O4) He
Li2C2O4 BeC2O4 +BO3 +CO3 (NH4)2C2O4
+NO3 		O F Ne
Na2C2O4
NaHC2O4 		MgC2O4 Al Si +PO4
+PO3 		+SO4 +Cl Ar
K2C2O4
KHC2O4 		CaC2O4 Sc Ti V CrC2O4 MnC2O4 FeC2O4
Fe2(C2O4)3
+Fe
humboldtine
+NH4 +Na +K +K 		CoC2O4 -Ni CuC2O4 Katsarosite Ga2(C2O4)3 Ge As Se Br Kr
Rb2C2O4 SrC2O4 Y2(C2O4)3 Zr Nb(HC2O4)5 Mo Tc Ru Rh Pd Ag2C2O4 CdC2O4 In2(C2O4)3 SnC2O4 Sb Te I Xe
Cs2C2O4 BaC2O4 * Lu2(C2O4)3 Hf Ta W Re Os Ir -Pt Au Hg Tl PbC2O4 Bi Po At Rn
Fr Ra ** Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
 
* La2(C2O4)3 Ce2(C2O4)3 Pr2(C2O4)3 Nd2(C2O4)3 Pm2(C2O4)3 Sm2(C2O4)3 Eu2(C2O4)3 Gd2(C2O4)3 Tb2(C2O4)3 Dy2(C2O4)3 Ho2(C2O4)3 Er2(C2O4)3 Tm2(C2O4)3 Yb2(C2O4)3
** Ac2(C2O4)3 Th(C2O4)2 Pa UO2C2O4 Np(C2O4)2 Pu(C2O4)2 Am Cm2(C2O4)3 Bk2(C2O4)3 Cf2(C2O4)3 Es2(C2O4)3 Fm Md No


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