Using C Is and O Is scanned-energy mode photoelectron diffraction, the local adsorption site and orientation of CO adsorbed on Cu(210) has been determined. The results show that the molecule adsorbs in an essential on-top site through the C atom with C-Cu and C-O bondlengths generally consistent with previous studies on low index Cu surfaces. The molecule has a significant tilt (18 +/- 6 degrees) of the C-O axis away from the surface normal, with components both perpendicular and parallel to the [0 0 1] steps on this surface. (C) 2001 Elsevier Science B.V. All rights reserved
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