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https://hdl.handle.net/10356/87954
Title: | A kinetically blocked 1,14:11,12-dibenzopentacene : a persistent triplet diradical of a non-Kekulé polycyclic benzenoid hydrocarbon | Authors: | Li, Yuan Huang, Kuo-Wei Sun, Zhe Webster, Richard David Zeng, Zebing Zeng, Wangdong Chi, Chunyan Ko, Furukawa Wu, Jishan |
Keywords: | DRNTU::Science::Chemistry Benzenoid hydrocarbons Polycyclic Hydrocarbon |
Issue Date: | 2014 | Source: | Li, Y., Huang, K.-W., Sun, Z., Webster, R. D., Zeng, Z., Zeng, W., . . . Wu, J. (2014). A kinetically blocked 1,14:11,12-dibenzopentacene: a persistent triplet diradical of a non-Kekulé polycyclic benzenoid hydrocarbon. Chemical Science, 5(5), 1908-1914. doi:10.1039/c3sc53015a | Series/Report no.: | Chemical Science | Abstract: | 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-Kekulé 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. | URI: | https://hdl.handle.net/10356/87954 http://hdl.handle.net/10220/45702 |
ISSN: | 2041-6520 | DOI: | 10.1039/c3sc53015a | Schools: | School of Physical and Mathematical Sciences | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | SPMS Journal Articles |
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