Dissociative adsorption of NO upon AI(111): Orientation dependent charge transfer and chemisorption reaction dynamics.

In order to clarify the underlying mechanism of the initial oxidation of aluminum, the reaction between a heteronuclear diatomic molecule, nitric oxide, and the Al(111) surface was studied. It was shown that the reaction of NO with aluminum is a two-step process including a change of the orientation of the molecule with respect to the surface

Impact site-dependent molecular anisotropy: NO scattering from Ru(0001)-(1x1)H

Oriented beams of NO molecules have been scattered from a Ru(0001)-(1×1)H surface. The interaction of NO with Ru-H is found to have both a strong orientation and lateral dependence. The angular distributions for N-end and O-end scattering are quite different, and demonstrate that in the chemisorbing region of the unit cell the N-end is strongly bonding, while the O-end is essentially repulsive. Above the so-called mirror reflection region the N-end and O-end interaction are equally repulsive. © 2004 Elsevier B.V. All rights reserved