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

作者：Nakanaga Taisuke^*; Nagai Hidekazu; Saito Naoaki; Fujiwara Yukio; Nonaka Hidehiko

来源：Chemical Physics Letters, 2013, 556: 44-48.

DOI：10.1016/j.cplett.2012.11.070

The kinetic energies of Ir-m(CO)(n)(+) ions observed in the high resolution TOF-SIMS of Ir-4(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 Ir-m(+) shell.
The signal of Ir-5(CO)(12)(+) ion is missing in the observed mass spectrum. The analysis of the uni-molecular dissociation reactions of the complex ions and DFT calculations have shown that this is due to the structural change of Ir-5(+) shell with the increase of the coordinated CO molecules.

• 出版日期2013-1-29