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Communication

Oxidation-Induced Detachment of Ruthenoarene Units and Oxygen Insertion in Bis-Pd(II) Hexaphyrin π-Ruthenium Complexes

Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
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Academic Editors: Derek J. McPhee, M. Salomé Rodríguez-Morgade and Soji Shimizu
Molecules 2020, 25(12), 2753; https://doi.org/10.3390/molecules25122753
Received: 27 May 2020 / Revised: 4 June 2020 / Accepted: 12 June 2020 / Published: 15 June 2020
(This article belongs to the Special Issue Phthalocyanines and Porphyrins)
Two types of new bis-Pd(II) hexaphyrin π-ruthenium complexes are reported. A double-decker bis-Pd(II) hexaphyrin π-ruthenium complex 4 was obtained by oxidation-induced detachment of a ruthenoarene unit from the triple-decker complex 3 and oxygen-inserted triple-decker bis-Pd(II) hexaphyrin π-ruthenium complex 6 was obtained upon treatment of bis-Pd(II) [26]hexaphyrin 5 with [RuCl2(p-cymene)]2 under aerobic conditions. Although π-metal complexation of porphyrinoids often results in decreased global aromaticity due to the enhancement of local 6π aromatic segments, distinct aromatic characters were indicated for 4 and 6 by 1H-NMR spectral and theoretical calculations. These results are accounted for in terms of possible resonance contributors of hexaphyrin di- and tetraanion ligands. Thus, π-metal coordination has been shown to be effective for modulation of the overall aromaticity. View Full-Text
Keywords: expanded porphyrin; π-complex; ruthenium complex; aromaticity expanded porphyrin; π-complex; ruthenium complex; aromaticity
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MDPI and ACS Style

Nakai, A.; Tanaka, T.; Osuka, A. Oxidation-Induced Detachment of Ruthenoarene Units and Oxygen Insertion in Bis-Pd(II) Hexaphyrin π-Ruthenium Complexes. Molecules 2020, 25, 2753. https://doi.org/10.3390/molecules25122753

AMA Style

Nakai A, Tanaka T, Osuka A. Oxidation-Induced Detachment of Ruthenoarene Units and Oxygen Insertion in Bis-Pd(II) Hexaphyrin π-Ruthenium Complexes. Molecules. 2020; 25(12):2753. https://doi.org/10.3390/molecules25122753

Chicago/Turabian Style

Nakai, Akito, Takayuki Tanaka, and Atsuhiro Osuka. 2020. "Oxidation-Induced Detachment of Ruthenoarene Units and Oxygen Insertion in Bis-Pd(II) Hexaphyrin π-Ruthenium Complexes" Molecules 25, no. 12: 2753. https://doi.org/10.3390/molecules25122753

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