2CuCN + 2FeCl3 C2N2 + 2CuCl + 2FeCl2
or
2CuCN + 2FeCl3 (CN)2 + 2CuCl + 2FeCl2 [16]
Copper(I) cyanide react with iron(III) chloride to produce cyanogen, copper(I) chloride and iron(II) chloride. This reaction takes place in a water solution, heating the reaction mixture.