Ligand binding energies in cationic platinum(II) complexes: A quantitative study in the gas phase

Marc-Etienne Moret, Peter Chen*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Quantitative energy-resolved reactive cross-section measurements and DFT calculations are used to investigate the binding energies of various ligands to the metal center in cationic Pt(II) diimine complexes involved in C-H activation reactions. Independent synthesis of isomeric ions establishes the structure of the adducts formed in gas-phase reactions. The order and relative magnitude of a series of ligand binding energies extracted from experimental cross-sections reproduce the trends seen in solution-phase experiments only when the proper transition state model is employed in the deconvolution of the experimental cross-sections. The choice of transition state model can be rationalized by qualitative structural arguments as well as quantum chemical calculations of the reaction coordinate for the dissociation of the range of possible ligands.

Original languageEnglish
Pages (from-to)1523-1530
Number of pages8
JournalOrganometallics
Volume26
Issue number6
DOIs
Publication statusPublished - 12 Mar 2007
Externally publishedYes

Keywords

  • COLLISION-INDUCED DISSOCIATION
  • C-H ACTIVATION
  • DENSITY-FUNCTIONAL THEORY
  • DIIMINE AQUA COMPLEX
  • HYDROCARBON ACTIVATION
  • HYDROXYLIC SOLVENT
  • BOND ACTIVATION
  • METAL-COMPLEXES
  • MILD CONDITIONS
  • EXCHANGE

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