Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5426210 | Surface Science | 2008 | 8 Pages |
Chemisorbed benzene was studied by room temperature STM at low coverage on Si(1Â 1Â 1)7Â ÃÂ 7. Images taken of both filled and unfilled states show effects on adatoms near the benzene molecules. Filled states imaging shows a significant amount of what we believe to be charge transfer throughout the involved half unit cell. For a benzene molecule bound to a middle adatom there is also significant charge transferred from the adjacent middle adatom of the neighbouring half unit cell. Symmetry considerations allow for the conclusion that benzene binds in a di-Ï bridge configuration between an atom and rest-atom. Evidence has been obtained that charge transfers away from the involved rest-atom to adjacent adatoms. Empty states imaging of the Ïâ state also provides evidence for the involvement of a rest-atom in the binding.