Abstract: The present invention provides a process for the deposition of a iridium containing film on a substrate, the process comprising the steps of providing at least one substrate in a reactor; introducing into the reactor at least one iridium containing precursor having the formula: XIrYA, wherein A is equal to 1 or 2 and i) when A is 1, X is a dienyl ligand and Y is a diene ligand; ii) when A is 2, a) X is a dienyl ligand and Y is selected from CO and an ethylene ligand, b) X is a ligand selected from H, alkyl, alkylamides, alkoxides, alkylsilyls, alkylsilylamides, alkylamino, and fluoroalkyl and each Y is a diene ligand, and c) X is a dienyl ligand and Y is a diene ligand; reacting the at least one iridium containing precursor in the reactor at a temperature equal to or greater than 100° C.; and depositing an iridium containing film formed from the reaction of the at least one iridium containing precursor onto the at least one substrate.