THE ADSORPTION SITE OF PYRIDINE ON NI(111) DETERMINED BY LOW-ENERGY PHOTOELECTRON DIFFRACTION

Authors
FRITZSCHE V BAO S HOFMANN P POLCIK M SCHINDLER KM BRADSHAW AM DAVIS R WOODRUFF DP
Citation
V. Fritzsche et al., THE ADSORPTION SITE OF PYRIDINE ON NI(111) DETERMINED BY LOW-ENERGY PHOTOELECTRON DIFFRACTION, Surface science, 319(1-2), 1994, pp. 120000001-120000006
Citations number
25
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
319
Issue
1-2
Year of publication
1994
Pages
120000001 - 120000006
Database
ISI
SICI code
0039-6028(1994)319:1-2<120000001:TASOPO>2.0.ZU;2-S
Abstract
The adsorption site of pyridine (C5H5N) on Ni{111} has been investigat ed by scanned-energy mode photoelectron diffraction using the N1s core level. It was found that the nitrogen atom adsorbs close to the atop position with an angle of 18 degrees(+2 degrees/-4 degrees) between th e N-Ni bond and the surface normal. The N-Ni bond length is 1.97 +/- 0 .03 Angstrom. Since recent X-ray absorption studies show that the pi s ystem of the pyridine is also tilted by about 20 degrees away from the surface normal, we conclude that the N-Ni bond and the ring plane are co-planar.