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Keywords:

  • CO2 activation;
  • density functional calculations;
  • isotopic labeling;
  • metal–ligand cooperation;
  • NMR spectroscopy;
  • PNP pincer ligands;
  • ruthenium
Thumbnail image of graphical abstract

Team work: Although CO2 binding to metal centers usually involves π coordination to a C[DOUBLE BOND]O group or σ bonds to the carbon or oxygen atom of the CO2 molecule, a new mode of metal–ligand cooperative activation of CO2 to a ruthenium PNP pincer complex involving aromatization/dearomatization steps is presented in experimental and theoretical studies (see scheme).