DOI | Trouver le DOI : https://doi.org/10.1016/S0009-2614(01)00535-8 |
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Auteur | Rechercher : Mezhenny, S.; Rechercher : Lyubinetsky, I.; Rechercher : Choyke, W. J.; Rechercher : Wolkow, R. A.1; Rechercher : Yates Jr., J. T. |
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Affiliation | - Conseil national de recherches du Canada. Institut Steacie des sciences moléculaires du CNRC
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Format | Texte, Article |
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Résumé | Adsorption of acetylene on the Si(1 0 0) –(2×1) surface was studied at room temperature by scanning tunneling microscopy (STM) and theoretical modeling. Acetylene molecules adsorb nondissociatively in three distinctive bonding configurations, not one, as reported previously. In Configuration I, C2H2 molecules adsorb in di-σ form over a single silicon dimer with a relative population of 0.33 at low coverage. Configuration II has an initial formation probability of 0.51 and involves adsorption across the ends of two adjacent dimers in the same row. In Configuration III (r-bridge) C2H2 forms four bonds as it symmetrically bridges two neighboring dimers. Relative populations depend strongly on coverage. Above a coverage of ∼0.13 an acceleration in the rate of formation of Configuration III (r-bridge) is observed. |
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Date de publication | 2001-08-17 |
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Dans | |
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Langue | anglais |
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Numéro NPARC | 12327717 |
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Exporter la notice | Exporter en format RIS |
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Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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Identificateur de l’enregistrement | 0cca1558-481d-4920-89cb-9800466b7b17 |
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Enregistrement créé | 2009-09-10 |
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Enregistrement modifié | 2020-03-27 |
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