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Schlagwörter:
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Zusammenfassung:
The adsorption site of pyridine (C5H5N) on Ni{111} has been investigated by scanned-energy mode photoelectron diffraction using the N 1s core level. It was found that the nitrogen atom adsorbs close to the atop position with an angle of 18° (+ 2° - 4°) between the N-Ni bond and the surface normal. The N-Ni bond length is 1.97 ± 0.03 Å. Since recent X-ray absorption studies show that the π system of the pyridine is also tilted by about 20° away from the surface normal, we conclude that the N-Ni bond and the ring plane are co-planar.
