Trimethyltin-Mediated Covalent Gold–Carbon Bond Formation
| Autor: | Su Ying Quek, Dean Cvetko, Latha Venkataraman, Colin Nuckolls, Jeffrey S. Meisner, Narjes Gorjizadeh, Gregor Kladnik, Alberto Morgante, Arunabh Batra, Michael L. Steigerwald |
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| Přispěvatelé: | Arunabh, Batra, Kladnik, Gregor, Narjes, Gorjizadeh, Jeffrey, Meisner, Michael, Steigerwald, Colin, Nuckoll, Su Ying, Quek, Dean, Cvetko, Morgante, Alberto, Latha, Venkataraman |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Photoemission spectroscopy
chemistry.chemical_element Biochemistry Catalysis SINGLE-MOLECULE JUNCTIONS covalent bond SELF-ASSEMBLED MONOLAYERS Colloid and Surface Chemistry Computational chemistry gold carbon bond Molecule DEPOSITION X-RAY PHOTOEMISSION Electronic properties X ray photoemission SPECTROSCOPY CONDUCTANCE Chemistry near-edge X-ray absorption spectroscopy SURFACES General Chemistry Bond formation Crystallography Covalent bond Absorption (chemistry) Carbon |
| Zdroj: | Journal of the American Chemical Society 136 (2014): 12556–12559. doi:10.1021/ja5061406 info:cnr-pdr/source/autori:Batra, Arunabh; Kladnik, Gregor; Gorjizadeh, Narjes; Meisner, Jeffrey; Steigerwald, Michael; Nuckolls, Colin; Quek, Su Ying; Cvetko, Dean; Morgante, Alberto; Venkataraman, Latha/titolo:Trimethyltin-Mediated Covalent Gold-Carbon Bond Formation/doi:10.1021%2Fja5061406/rivista:Journal of the American Chemical Society (Print)/anno:2014/pagina_da:12556/pagina_a:12559/intervallo_pagine:12556–12559/volume:136 |
| Popis: | We study the formation of covalent goldcarbon bonds in benzyltrimethylstannane (C10H16Sn) deposited on Au in ultra-high-vacuum conditions. Through X-ray photoemission spectroscopy and X-ray absorption measurements, we find that the molecule fragments at the Snbenzyl bond when exposed to Au surfaces at temperatures as low as -110 degrees C. The resulting benzyl species is stabilized by the presence of Au(111) but only forms covalent AuC bonds on more reactive Au surfaces like Au(110). We also present spectroscopic proof for the existence of an electronic gateway state localized on the AuC bond that is responsible for its unique electronic properties. Finally, we use DFT-based nudged elastic band calculations to elucidate the crucial role played by the under-coordinated Au surface in the formation of AuC bonds. |
| Databáze: | OpenAIRE |
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