2014年
A kinetically blocked 1,14:11,12-dibenzopentacene: a persistent triplet diradical of a non-Kekule polycyclic benzenoid hydrocarbon
CHEMICAL SCIENCE
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- 巻
- 5
- 号
- 5
- 開始ページ
- 1908
- 終了ページ
- 1914
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1039/c3sc53015a
- 出版者・発行元
- ROYAL SOC CHEMISTRY
The synthesis of high-spin polycyclic hydrocarbons is very challenging due to their extremely high reactivity. Herein, we report the synthesis and characterization of a kinetically blocked 1,14:11,12-dibenzopentacene, DP-Mes, which represents a rare persistent triplet diradical of a non-Kekule polycyclic benzenoid hydrocarbon. In contrast to its structural isomer 1,14:7,8-dibenzopentacene (heptazethrene) with a singlet biradical ground state, DP-Mes is a triplet diradical as confirmed by ESR and ESTN measurements and density functional theory calculations. DP-Mes also displays intermolecular antiferromagnetic spin interactions in solution at low temperature.
- リンク情報
- ID情報
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- DOI : 10.1039/c3sc53015a
- ISSN : 2041-6520
- eISSN : 2041-6539
- Web of Science ID : WOS:000334492700029