PdII Complexes of [44]‐ and [46]Decaphyrins: The Largest Hückel Aromatic and Antiaromatic,and Möbius Aromatic Macrocycles |
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| Authors: | Tomoki Yoneda Young Mo Sung Dr Jong Min Lim Prof?Dr Dongho Kim Prof?Dr Atsuhiro Osuka |
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| Affiliation: | 1. Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo‐ku, Kyoto 606‐8502 (Japan);2. Spectroscopy Laboratory for Functional π‐Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120‐749 (Korea) |
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| Abstract: | Reductive metalation of 44]decaphyrin with Pd2(dba)3] provided a Hückel aromatic 46]decaphyrin PdII complex, which was readily oxidized upon treatment with DDQ to produce a Hückel antiaromatic 44]decaphyrin PdII complex. In CH2Cl2 solution the latter complex underwent slow tautomerization to a Möbius aromatic 44]decaphyrin PdII complex which exists as a mixture of conformers in dynamic equilibrium. To the best of our knowledge, these three PdII complexes represent the largest Hückel aromatic, Hückel antiaromatic, and Möbius aromatic complexes to date. |
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| Keywords: | aromaticity decaphyrins Pd complexes porphyrinoids tautomerization |
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