| Autor: |
Hedgeland H; Cavendish Laboratory, University of Cambridge, United Kingdom. hh242@cam.ac.uk, Lechner BA, Tuddenham FE, Jardine AP, Allison W, Ellis J, Sacchi M, Jenkins SJ, Hinch BJ |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2011 May 06; Vol. 106 (18), pp. 186101. Date of Electronic Publication: 2011 May 02. |
| DOI: |
10.1103/PhysRevLett.106.186101 |
| Abstrakt: |
The dissociative adsorption of cyclopentadiene (C(5)H(6)) on Cu(111) yields a cyclopentadienyl (Cp) species with strongly anionic characteristics. The Cp potential energy surface and frictional coupling to the substrate are determined from measurements of dynamics of the molecule together with density functional calculations. The molecule is shown to occupy degenerate threefold adsorption sites and molecular motion is characterized by a low diffusional energy barrier of 40±3 meV with strong frictional dissipation. Repulsive dipole-dipole interactions are not detected despite charge transfer from substrate to adsorbate. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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