4.8 Article

A Stable Non-Kekule Singlet Biradicaloid from meso-Free 5,10,20,25-Tetrakis(Pentafluorophenyl)-Substituted [26]Hexaphyrin(1.1.1.1.1.1)

期刊

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 132, 期 21, 页码 7246-+

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AMER CHEMICAL SOC
DOI: 10.1021/ja101040s

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资金

  1. Grants-in-Aid for Scientific Research [20108006, 22245006] Funding Source: KAKEN
  2. Ministry of Education, Science & Technology (MoST), Republic of Korea [R32-2008-000-10217-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
  3. National Research Foundation of Korea [R16-1997-011-01001-0, 2005-0093839] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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A meso,meso-diketohexaphyrin was isolated and characterized as a chemically stable non-Kekule singlet biradicaloid. Two unpaired electrons are seemingly delocalized on two tripyrrolic units separated by C=O bonds. These results underscore the potential of expanded porphyrins to achieve unique electronic states.

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