Characteristic
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.
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)
Application
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.