Redox‐Induced Modulation of Exchange Interaction in a High‐Spin Ground‐State Diradical/Triradical System
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- Atsuki Nagata
- Graduate School of Science Osaka City University Sumiyoshi-ku, Osaka Osaka 558-8585 Japan
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- Shinsuke Hiraoka
- Graduate School of Science Osaka City University Sumiyoshi-ku, Osaka Osaka 558-8585 Japan
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- Shuichi Suzuki
- Graduate School of Science Osaka City University Sumiyoshi-ku, Osaka Osaka 558-8585 Japan
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- Masatoshi Kozaki
- Graduate School of Science Osaka City University Sumiyoshi-ku, Osaka Osaka 558-8585 Japan
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- Daisuke Shiomi
- Graduate School of Science Osaka City University Sumiyoshi-ku, Osaka Osaka 558-8585 Japan
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- Kazunobu Sato
- Graduate School of Science Osaka City University Sumiyoshi-ku, Osaka Osaka 558-8585 Japan
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- Takeji Takui
- Graduate School of Science Osaka City University Sumiyoshi-ku, Osaka Osaka 558-8585 Japan
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- Rika Tanaka
- X-ray Crystal Analysis Laboratory Graduate School of Engineering, Osaka City University Sumiyoshi-ku, Osaka Osaka 558-8585 Japan
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- Keiji Okada
- Graduate School of Science Osaka City University Sumiyoshi-ku, Osaka Osaka 558-8585 Japan
書誌事項
- 公開日
- 2020-02-21
- 資源種別
- journal article
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1002/chem.201905465
- 公開者
- Wiley
この論文をさがす
説明
<jats:title>Abstract</jats:title><jats:p>A triplet ground‐state diradical molecule, bis(nitronyl nitroxide)‐substituted diphenyldihydrophenazine (<jats:bold>1</jats:bold><jats:sup>..</jats:sup>), that can be converted into a one‐electron oxidized species, <jats:bold>1</jats:bold><jats:sup>…<jats:bold>+</jats:bold></jats:sup>, in the quartet ground state has been developed. Surprisingly, these species, <jats:bold>1</jats:bold><jats:sup>..</jats:sup> and <jats:bold>1</jats:bold><jats:sup>…<jats:bold>+</jats:bold></jats:sup>, can be used under ambient conditions because they are reasonably stable under aerobic conditions, even in solution. The temperature‐dependent magnetic susceptibilities reveal that <jats:bold>1</jats:bold><jats:sup>..</jats:sup> and <jats:bold>1</jats:bold><jats:sup>…<jats:bold>+</jats:bold></jats:sup> are in the triplet state, with a weak exchange interaction (<jats:italic>J</jats:italic><jats:sub>1</jats:sub>/<jats:italic>k</jats:italic><jats:sub>B</jats:sub> = +3.1 K) and quartet ground state with a strong exchange interaction (<jats:italic>J</jats:italic><jats:sub>2</jats:sub>/<jats:italic>k</jats:italic><jats:sub>B</jats:sub> = +160 K), respectively. The interconversion between the neutral and one‐electron oxidized species can be realized through electrochemical reactions. Significantly different absorption bands in the near‐IR region newly appeared in the electronic spectra acquired during electrochemical oxidation/reduction.</jats:p>
収録刊行物
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- Chemistry – A European Journal
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Chemistry – A European Journal 26 (14), 3166-3172, 2020-02-21
Wiley
