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Cobalt(II) carbonate
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Cobalt(II) carbonate
Cobalt(II) carbonate is the inorganic compound with the formula CoCO3. This pink paramagnetic solid is an intermediate in the hydrometallurgical purification of cobalt from its ores. It is an inorganic pigment, and a precursor to catalysts. Cobalt(II) carbonate also occurs as the rare red/pink mineral spherocobaltite.
It is prepared by combining solutions of cobalt(II) sulfate and sodium bicarbonate:
This reaction is used in the precipitation of cobalt from an extract of its roasted ores.
CoCO3 adopts a structure like calcite, consisting of cobalt in an octahedral coordination geometry.
Like most transition metal carbonates, cobalt carbonate is insoluble in water, but is readily attacked by mineral acids:
It is used to prepare many coordination complexes. The reaction of cobalt(II) carbonate and acetylacetone in the presence of hydrogen peroxide gives tris(acetylacetonato)cobalt(III).
Heating the carbonate proceeds in a typical way for calcining, except that the product becomes partially oxidized:
The resulting Co3O4 converts reversibly to CoO at high temperatures.
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Cobalt(II) carbonate
Cobalt(II) carbonate is the inorganic compound with the formula CoCO3. This pink paramagnetic solid is an intermediate in the hydrometallurgical purification of cobalt from its ores. It is an inorganic pigment, and a precursor to catalysts. Cobalt(II) carbonate also occurs as the rare red/pink mineral spherocobaltite.
It is prepared by combining solutions of cobalt(II) sulfate and sodium bicarbonate:
This reaction is used in the precipitation of cobalt from an extract of its roasted ores.
CoCO3 adopts a structure like calcite, consisting of cobalt in an octahedral coordination geometry.
Like most transition metal carbonates, cobalt carbonate is insoluble in water, but is readily attacked by mineral acids:
It is used to prepare many coordination complexes. The reaction of cobalt(II) carbonate and acetylacetone in the presence of hydrogen peroxide gives tris(acetylacetonato)cobalt(III).
Heating the carbonate proceeds in a typical way for calcining, except that the product becomes partially oxidized:
The resulting Co3O4 converts reversibly to CoO at high temperatures.
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