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Ammonia adsorption on iron phthalocyanine on Au(111): Influence on adsorbate-substrate coupling and molecular spin.

Publiceringsår: 2011
Språk: Engelska
Publikation/Tidskrift/Serie: Journal of Chemical Physics
Volym: 134
Nummer: 11
Dokumenttyp: Artikel
Förlag: American Institute of Physics


The adsorption of ammonia on Au(111)-supported monolayers of iron phthalocyanine has been investigated by x-ray photoelectron spectroscopy, x-ray absorption spectroscopy, and density functional theory calculations. The ammonia-induced changes of the x-ray photoemission lines show that a dative bond is formed between ammonia and the iron center of the phthalocyanine molecules, and that the local spin on the iron atom is quenched. This is confirmed by density functional theory, which also shows that the bond between the iron center of the metalorganic complex and the Au(111) substrate is weakened upon adsorption of ammonia. The experimental results further show that additional adsorption sites exist for ammonia on the iron phthalocyanine monolayer.



  • Natural Sciences
  • Physical Sciences
  • Atom and Molecular Physics and Optics


Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The article appeared in The Journal of Chemical Physics (Isvoranu et al., J. Chem. Phys. 134 (2011) 114711) and may be found at
  • ISSN: 1089-7690

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