Academic Journal
An N-heterocyclic carbene ligand promotes highly selective alkyne semihydrogenation with copper nanoparticles supported on passivated silica
| العنوان: | An N-heterocyclic carbene ligand promotes highly selective alkyne semihydrogenation with copper nanoparticles supported on passivated silica |
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| المؤلفون: | Kaeffer, Nicolas, id_orcid:0 000-0002-3166-8551, Liu, Hsueh-Ju, Lo, Hung-Kun, Fedorov, Alexey, id_orcid:0 000-0001-9814-6726, Copéret, Christophe, id_orcid:0 000-0001-9660-3890 |
| المصدر: | Chemical Science, 9 (24) |
| بيانات النشر: | Royal Society of Chemistry |
| سنة النشر: | 2018 |
| المجموعة: | ETH Zürich Research Collection |
| الوصف: | We report a surface organometallic route that generates copper nanoparticles (NPs) on a silica support while simultaneously passivating the silica surface with trimethylsiloxy groups. The material is active for the catalytic semihydrogenation of phenylalkyl-, dialkyl- and diaryl-alkynes and displays high chemo- and stereoselectivity at full alkyne conversion to corresponding (Z)-olefins in the presence of an N-heterocyclic carbene (NHC) ligand. Solid-state NMR spectroscopy using the NHC ligand 13C-labeled at the carbenic carbon reveals a genuine coordination of the carbene to Cu NPs. The presence of distinct Cu surface environments and the coordination of the NHC to specific Cu sites likely account for the increased selectivity. ; ISSN:2041-6520 ; ISSN:2041-6539 |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/application/pdf |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/wos/000436027800008; http://hdl.handle.net/20.500.11850/274422 |
| DOI: | 10.3929/ethz-b-000274422 |
| الاتاحة: | https://hdl.handle.net/20.500.11850/274422 https://doi.org/10.3929/ethz-b-000274422 |
| Rights: | info:eu-repo/semantics/openAccess ; http://creativecommons.org/licenses/by-nc/3.0/ ; Creative Commons Attribution-NonCommercial 3.0 Unported |
| رقم الانضمام: | edsbas.3090964E |
| قاعدة البيانات: | BASE |
| DOI: | 10.3929/ethz-b-000274422 |
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