Potassium cyanide
= Potassium cyanide
{title2=$\mathrm{KCN}$}
{wiki}
<Potassium cyanide> is the salt $\mathrm{KCN}$, containing potassium and cyanide ions. The cyanide carbon-nitrogen unit is distinct from a covalently attached nitrile group in an organic molecule.
Cyanide can act as a nucleophile and a ligand, while protonation changes it into hydrogen cyanide. Its reactions therefore depend on both coordination chemistry and acid-base speciation.