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On the 13C-NMR chemical shift anisotropy patterns and aromatic character in strained fullerenes: Computational analysis of D6h/D2d-C36 fullerene
dc.contributor.author | Guajardo‐Maturana, Raul | |
dc.contributor.author | Rodríguez-Kessler, Peter L. | |
dc.contributor.author | MacLeod‐Carey, Desmond | |
dc.contributor.author | Muñoz‐Castro, Álvaro | |
dc.date.accessioned | 2020-09-16T13:08:24Z | |
dc.date.available | 2020-09-16T13:08:24Z | |
dc.date.issued | 2020-09-05 | |
dc.identifier | 10.1002/qua.26437 | |
dc.identifier.issn | 00207608 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12728/6824 | |
dc.description.abstract | The NMR characterization of small C36 hollow fullerene exposes a stable cage with structural features based on its strained curved π-surface in a D6h-symmetry. Our results indicate that planar-like aromatic properties of the D6h-C36 isomer decrease to a nonaromatic cage for D2d-C36 after Stone-Wales transformation of an equatorial [6.6] bond. This is given by the decrease of conjugation in the strained π-surface after Stone-Wales transformation. Calculated nuclear shielding shows that the main shielding component is always oriented perpendicularly to the cage π-surface despite the larger curvature degree, as a result of the sp2 character of carbon atoms, resembling C60. Moreover, the D6h- and D2d-C36 cages differ in their charge distribution properties, leading to charge accumulation in the strained cap of the former that leads to a polymerization-prone cage, which contrasts with that expected for the D2d structure. Hence, structural rearrangements of these non-Hirsch aromatic fullerenes show that their inherent global behavior requires considering the structural features besides electron counting rules. | es_ES |
dc.language.iso | en | es_ES |
dc.publisher | John Wiley and Sons Inc. | es_ES |
dc.subject | Aromatic | es_ES |
dc.subject | Fullerene | es_ES |
dc.subject | Magnetic field | es_ES |
dc.subject | NMR | es_ES |
dc.title | On the 13C-NMR chemical shift anisotropy patterns and aromatic character in strained fullerenes: Computational analysis of D6h/D2d-C36 fullerene | es_ES |
dc.type | Article | es_ES |