Guided ion beam and ab initio studies of platinum chloride cations

Abstract

The reactions of Pt+ and PtCl+ with Cl2, ligand exchange reactions of PtCl+ and PtCl2+ with CO, and collision-induced dissociation (CID) of PtCl+, PtCl2+, and PtClCO+ are studied in a guided ion beam tandem mass spectrometer. The reactions with Cl2 are exothermic and efficient at thermal energies, producing PtCl+ and PtCl2+, respectively. The ligand exchange reactions of PtCl+ yield PtCO+ and of PtCl2+ produce PtClCO+ and PtCO+, all in endothermic processes. In addition, PtCl2+ reacts with CO to form C-Cl bonds yielding both Cl2CO and ClCO. The kinetic energy dependence of these reactions and of the CID processes are analyzed to yield bond dissociation energies (BDEs) at 0 K for Pt+-Cl and C..