Stabilities and dissociation reactions of the Ir m (CO) n + ions observed in TOF-SIMS of Ir 4 (CO) 12 thin layer

The kinetic energies of Irm(CO)n+ ions observed in the high resolution TOF-SIMS of Ir4(CO)12 layer have been estimated using the post-acceleration electrode method. The observed kinetic energy of secondary ion depends on the number of coordinated CO molecules, but not on the cluster size of Irm+ shell.