Iridium(II) chloride

Iridium chloride is an inorganic chemical compound of iridium metal and chlorine with the chemical formula. This is a metal salt of iridium and hydrochloric acid.

Synthesis

The substance is obtained by the interaction of powdered metallic iridium with chlorine gas when heated:
Iridium chloride can also be made in a reaction between iridium(III) chloride and metallic iridium:

Physical properties

Iridium dichloride forms shiny dark-green crystals that are practically insoluble in water. Poorly soluble in acids and alkali. When heated to 773 °C, decomposes without melting.
The standard Gibbs energy of the formation of ΔG is -139.7.

Chemical properties

When heated to 773 °C decomposes according to the equation:
At temperatures above 798 °C, complete decomposition of the substance occurs: