期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 37, 页码 15897-15901出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202005167
关键词
aromaticity; carbacorroles; closed-shell singlet; copper; N-N linkages
资金
- Japan Society for the Promotion of Science (JSPS) [JP19K05439, JP19H04586, JP20H00406]
- Tokuyama Science Foundation
- [JP18F18331]
A copper complex of a heterocorrole analogue with an N-N linkage, 1,19-diaza-21,24-dicarbadibenzocorrole (Cu-5), was successfully synthesized via oxidative metalation-cyclization of a tetrapyrrolic precursor. The N-N linkage in the skeleton ofCu-5, which serves as a mediator of pi-electron delocalization, features an 18 pi aromatic system. The electronic structure ofCu-5is best described as a ground-state singlet species stabilized by the distinct NNCC coordination core. This finding shows how the ligand's design can be used to modulate the Cu3dx2-y2orbital energy, thereby making such compounds invaluable for copper-based catalytic applications.
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