Cobalt(II) cyanide
Encyclopedia
Cobalt cyanide is the inorganic compound
with the formula Co(CN)2. It is coordination polymer that has attracted intermitant attention over many years in the area of inorganic synthesis and homogeneous catalysis
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to a cobalt salt solution.:
Hydrated Co(CN)2 dissolves in the presence of excess potassium cyanide, forming a red solution of K4Co(CN)6. This material further oxidizes to yellow K3Co(CN)6.
Inorganic compound
Inorganic compounds have traditionally been considered to be of inanimate, non-biological origin. In contrast, organic compounds have an explicit biological origin. However, over the past century, the classification of inorganic vs organic compounds has become less important to scientists,...
with the formula Co(CN)2. It is coordination polymer that has attracted intermitant attention over many years in the area of inorganic synthesis and homogeneous catalysis
Homogeneous catalysis
In chemistry, homogeneous catalysis is a sequence of reactions that involve a catalyst in the same phase as the reactants. Most commonly, a homogeneous catalyst is codissolved in a solvent with the reactants.-Acid catalysis:...
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Preparation
The trihydrate salt is obtained as a reddish brown precipitate by adding potassium cyanidePotassium cyanide
Potassium cyanide is an inorganic compound with the formula KCN. This colorless crystalline compound, similar in appearance to sugar, is highly soluble in water. Most KCN is used in gold mining, organic synthesis, and electroplating. Smaller applications include jewelry for chemical gilding and...
to a cobalt salt solution.:
- CoCl2(H2O)6 + 2 KCN → Co(CN)2 + 2 KCl + 6 H2O
Hydrated Co(CN)2 dissolves in the presence of excess potassium cyanide, forming a red solution of K4Co(CN)6. This material further oxidizes to yellow K3Co(CN)6.