Cobalt(II) oxalate

Identifiers

CAS Number

* 814-89-1 Y

3D model (JSmol)

* Interactive image

ChemSpider |

* 63139 N

PubChem CID

* 69946

UNII |

* R028MNY8UA Y

InChI

* InChI=1S/C2H2O4.Co/c3-1(4)2(5)6;/h(H,3,4)(H,5,6);/q;+2/p-2 N

Key: MULYSYXKGICWJF-UHFFFAOYSA-L N

* InChI=1/C2H2O4.Co/c3-1(4)2(5)6;/h(H,3,4)(H,5,6);/q;+2/p-2

Key: MULYSYXKGICWJF-NUQVWONBAF

SMILES

* C(=O)(C(=O)[O-])[O-].[Co+2]

Properties

Chemical formula

| CoC2O4
Molar mass | 146.9522 g/mol
Appearance  | gray/pink powder
Odor | odorless
Density | 3.01 g/cm3
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 [77 °F], 100 kPa).

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Infobox references

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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.[1]

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.[citation needed]

## Related compounds

Many cobalt(III) oxalate complexes are known, including [Co(C2O4)3]3- and [Co(C2H4(NH2)2)C2O4)2]−.[2] [3]

## 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.

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Cobalt compounds

* CoBr2
* Co(CN)2
* CoCO3
* CoC2O4
* CoCl2
* CoCl3
* Co(ClO3)2
* CoF2
* CoF3
* CoI2
* Co(NO3)2
* Co(NO3)3
* CoO
* Co(OH)2
* CoS
* CoSO4
* CoSe
* Co2O3
* Co2P
* Co3O4
* Co3(PO4)2
* Co(Ac)2

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Oxalates

* (NH4)2C2O4
* BaC2O4
* CaC2O4
* Ce2(C2O4)3
* CrC2O4
* CoC2O4
* CuC2O4
* FeC2O4
* Fe2(C2O4)3
* PbC2O4
* MgC2O4
* Ag2C2O4
* Na2C2O4
* SrC2O4
* Th(C2O4)2

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