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Keywords:

  • chlorine;
  • copper;
  • density functional calculations;
  • oxidation;
  • scanning probe microscopy
Thumbnail image of graphical abstract

To be or not to be chlorinated: When octaethylporphyrin iron(III) chloride (FeOEP[BOND]Cl) molecules are sublimated onto Cu(111) surfaces, two different molecular species are observed through scanning tunneling microscopy, showing either a protrusion or a depression at the center. In combination with van der Waals-corrected density functional calculations, our experiments reveal that one species corresponds to FeOEP[BOND]Cl molecules with the chlorine atom pointing away from the surface, whereas the other species has been dechlorinated.