Local adsorption geometry of benzene on Ni(110) at low coverage
Por:
Kang J.-H., Toomes R.L., Robinson J., Woodruff D.P., Schaff O., Terborg R., Lindsay R., Baumgärtel P., Bradshaw A.M.
Publicada:
1 ene 2000
Resumen:
Using scanned-energy mode photoelectron diffraction we have determined the local adsorption geometry of benzene adsorbed on Ni(110) at a coverage of approximately 0.1 monolayers. The molecule is found to adsorb with its molecular plane parallel to the surface, centred on a four-fold coordinated hollow site, with two opposite C-C bonds perpendicular to the close-packed ?110? rows of surface nickel atoms and a C-Ni nearest-neighbour layer spacing of 1.81±0.02 angstroms. The unusually high precision in the determination of the C-C distance in the benzene ring (1.45±0.03 angstroms) if the molecule is assumed to retain its full gas-phase symmetry shows that there is a significant increase in this distance relative to the free molecule (1.39 angstroms).
Filiaciones:
Kang J.-H.:
Physics Department, University of Warwick, CV4 7AL, Coventry, United Kingdom
Toomes R.L.:
Physics Department, University of Warwick, CV4 7AL, Coventry, United Kingdom
Robinson J.:
Physics Department, University of Warwick, CV4 7AL, Coventry, United Kingdom
Woodruff D.P.:
Physics Department, University of Warwick, CV4 7AL, Coventry, United Kingdom
Fritz-Haber-Institut der MPG, Faradayweg 4-6, D-14195, Berlin, Germany
Schaff O.:
Fritz-Haber-Institut der MPG, Faradayweg 4-6, D-14195, Berlin, Germany
Terborg R.:
Fritz-Haber-Institut der MPG, Faradayweg 4-6, D-14195, Berlin, Germany
Lindsay R.:
Fritz-Haber-Institut der MPG, Faradayweg 4-6, D-14195, Berlin, Germany
Baumgärtel P.:
Fritz-Haber-Institut der MPG, Faradayweg 4-6, D-14195, Berlin, Germany
Bradshaw A.M.:
Fritz-Haber-Institut der MPG, Faradayweg 4-6, D-14195, Berlin, Germany
|