[Co3@Ge6Sn18]5−: A Giant σ-Aromatic Cluster Analogous to H3+ and Li3+
Aromaticity is one of the most important concepts in chemistry and has been successfully extended to all-metal clusters. However, the study of all-metallic aromatic clusters remains in its early stages, with σ-aromatic clusters mostly limited to small sizes (≤12) that often require external stabiliz...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:10256/26905 |
| Acceso en línea: | http://hdl.handle.net/10256/26905 |
| Access Level: | acceso embargado |
| Palabra clave: | Compostos aromàtics Aromatic compounds Aromaticitat (Química) Aromaticity (Chemistry) |
| Sumario: | Aromaticity is one of the most important concepts in chemistry and has been successfully extended to all-metal clusters. However, the study of all-metallic aromatic clusters remains in its early stages, with σ-aromatic clusters mostly limited to small sizes (≤12) that often require external stabilization. In this work, we report the first Ge/Sn-based trimer, [Co3@Ge6Sn18]5−, which can be rationalized as the fusion of three [Co@Ge3Sn64−] units via a Ge3 face. Theoretical studies have revealed that two σ-electrons are delocalized across the entire trimer, with the spherical aromaticity of each [Co@Ge3Sn6] unit and the global σ-aromaticity of [Co3@Ge6Sn18]5− further supported by its electron delocalization and magnetic behavior. As a result, this trimer can be viewed as a giant σ-aromatic counterpart to the triatomic H3+ and Li3+. Our findings suggest the potential for synthesizing cluster-of-cluster analogs of discrete all-metallic aromatic species, such as Al42−, and further enhance our understanding of chemical bonding |
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