Li6E5Li6: Tetrel Sandwich Complexes with 10-π-Electrons
Abstract
When (4n +2) pi-electrons are located in single planar ring, it conventionally qualifies as aromatic. According Huckel's rule, systems possessing ten pi-electrons should be aromatic. Herein we report a series of D-5h Li6E5Li6 sandwich structures, representing the first global minima featuring ten pi-electrons E5(10-) ring (E=Si-Pb). However, these pi-electrons localize as five pi-lone-pairs rather than delocalized orbitals. The high symmetry structure achieved is a direct consequence of sigma-aromaticity, particularly favored in elements from Si to Pb, resulting in a pronounced diatropic ring current flow that contributes to the enhanced stability of these systems.
Más información
Título según WOS: | ID WOS:001133032100001 Not found in local WOS DB |
Título de la Revista: | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION |
Volumen: | 63 |
Número: | 5 |
Editorial: | WILEY-V C H VERLAG GMBH |
Fecha de publicación: | 2024 |
DOI: |
10.1002/anie.202317848 |
Notas: | ISI |