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- W2079668019 abstract "Prior work on benzene activation by size selected niobium cluster cations and anions of up to 30 atoms is extended systematically through studying aromatic poly- and heterocyclic molecules such as naphthalene, pyridine, thiophene, pyrrole, furan, and benzofuran. Naphthalene is found to act much like benzene when reacting under single collision conditions with individual clusters. The most likely process is carbidization through complete dehydrogenation. Some clusters of particular sizes (most notably n=19) fail to activate both homocyclic molecules. Instead seemingly intact adsorption is observed which proves that activation is kinetically hindered at some point. All of the five studied heterocyclic aromatic molecules react unconditionally and by complete dehydrogenation with cationic niobium clusters, while they only attach to or react with anionic clusters larger than a minimum size of n=19–21. These findings are taken as strong evidence for initial coordination to the metal clusters of the heterocycles through their lone pair orbitals. The paper comprehends the observations in terms of cluster surface structure and reactivity." @default.
- W2079668019 created "2016-06-24" @default.
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- W2079668019 date "2009-11-19" @default.
- W2079668019 modified "2023-10-17" @default.
- W2079668019 title "Reactions of simple aromatic heterocycles with niobium cluster ions (n≤30)" @default.
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- W2079668019 doi "https://doi.org/10.1063/1.3264575" @default.
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