Benzonorcorrole NiII Complexes: Enhancement of Paratropic Ring Current and Singlet Diradical Character by Benzo-Fusion

Takuya Yoshida, Kohtaro Takahashi, Yuki Ide, Ryohei Kishi, Jun Ya Fujiyoshi, Sangsu Lee, Yuya Hiraoka, Dongho Kim, Masayoshi Nakano, Takahisa Ikeue, Hiroko Yamada, Hiroshi Shinokubo

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Abstract

Fused benzene rings to antiaromatic compounds generally improve their stability but attenuate their antiaromaticity. The opposite case is now reported. NiII benzonorcorroles were synthesized and the effect of benzo-fusion on the antiaromaticity was elucidated. The benzo-fusion resulted in significant decrease of the HOMO–LUMO gaps and enhancement of the paratropic ring current effect. Furthermore, the introduction of the benzo groups induced singlet diradical character in the antiaromatic porphyrinoid.

Original languageEnglish
Pages (from-to)2209-2213
Number of pages5
JournalAngewandte Chemie - International Edition
Volume57
Issue number8
DOIs
Publication statusPublished - 2018 Feb 19

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All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Cite this

Yoshida, T., Takahashi, K., Ide, Y., Kishi, R., Fujiyoshi, J. Y., Lee, S., Hiraoka, Y., Kim, D., Nakano, M., Ikeue, T., Yamada, H., & Shinokubo, H. (2018). Benzonorcorrole NiII Complexes: Enhancement of Paratropic Ring Current and Singlet Diradical Character by Benzo-Fusion. Angewandte Chemie - International Edition, 57(8), 2209-2213. https://doi.org/10.1002/anie.201712961