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Cobalt(II) acetate
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Cobalt(II) acetate
Cobalt(II) acetate is the cobalt salt of acetic acid. It is commonly found as the tetrahydrate Co(CH3CO2)2·4 H2O, abbreviated Co(OAc)2·4 H2O. It is used as a catalyst.
Like many other transition metal acetates, cobalt(II) acetate forms by the reaction of cobalt oxide or hydroxide and acetic acid:
The tetrahydrate has been shown by X-ray crystallography to adopt an octahedral structure, the central cobalt centre being coordinated by four water molecules and two acetate ligands. The analogous nickel acetate is isostructural.
Various hydrates are known including Co(CH3CO2)2·H2O and [Co(CH3CO2)2]5·0.5 H2O. These are coordination polymers:
Cobalt acetate is a precursor to various oil drying agents, catalysts that allow paints and varnishes to harden.
Anhydrous cobalt acetate is a widely used source of cobalt in the synthesis of materials, catalyst, and complexes.
Oxidation of acetic acid solutions of cobalt(II) acetate, e.g. with ozone, gives cobalt(III) acetates, which are strong oxidants.
Cobalt salts are poisonous.[citation needed]
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Cobalt(II) acetate
Cobalt(II) acetate is the cobalt salt of acetic acid. It is commonly found as the tetrahydrate Co(CH3CO2)2·4 H2O, abbreviated Co(OAc)2·4 H2O. It is used as a catalyst.
Like many other transition metal acetates, cobalt(II) acetate forms by the reaction of cobalt oxide or hydroxide and acetic acid:
The tetrahydrate has been shown by X-ray crystallography to adopt an octahedral structure, the central cobalt centre being coordinated by four water molecules and two acetate ligands. The analogous nickel acetate is isostructural.
Various hydrates are known including Co(CH3CO2)2·H2O and [Co(CH3CO2)2]5·0.5 H2O. These are coordination polymers:
Cobalt acetate is a precursor to various oil drying agents, catalysts that allow paints and varnishes to harden.
Anhydrous cobalt acetate is a widely used source of cobalt in the synthesis of materials, catalyst, and complexes.
Oxidation of acetic acid solutions of cobalt(II) acetate, e.g. with ozone, gives cobalt(III) acetates, which are strong oxidants.
Cobalt salts are poisonous.[citation needed]
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