R. Terborg et al., Local adsorption geometry of 2-methyl-pyridine on Cu(110) determined by photoelectron diffraction, SURF SCI, 457(1-2), 2000, pp. 1-10
Using N 1s scanned-energy mode photoelectron diffraction, together with N K
-edge near-edge absorption fine structure, the local adsorption site and mo
lecular orientation of 2-methyl-pyridine adsorbed on Cu(110) has been deter
mined and the results are compared with a similar study of pyridine adsorpt
ion on the same surface. The molecule is found to bond to the surface throu
gh the N atom that occupies a near-atop site. The molecular plane is almost
perpendicular to the surface but twisted into an azimuth away from the two
principal high-symmetry directions of the surface. The aromatic ring is al
so tilted within the molecular plane such as to increase the separation of
the methyl group away from the surface. (C) 2000 Elsevier Science B.V. All
rights reserved.