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Reversible σ-Dimerizations of Persistent Organic Radical Cations

Authors

  • Xiaoyu Chen,

    1. State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (China)
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  • Dr. Xingyong Wang,

    1. Theoretical and Computational Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (China)
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  • Zhaoyi Zhou,

    1. State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (China)
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  • Prof. Yizhi Li,

    1. State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (China)
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  • Yunxia Sui,

    1. Centre of Modern Analysis, Nanjing University, Nanjing 210093 (China)
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  • Prof. Jing Ma,

    1. Theoretical and Computational Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (China)
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  • Prof. Xinping Wang,

    Corresponding author
    1. State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (China)
    • State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (China)
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  • Prof. Philip P. Power

    Corresponding author
    1. Department of Chemistry, University of California, Davis, CA 95616 (USA)
    • Department of Chemistry, University of California, Davis, CA 95616 (USA)
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  • We thank the US National Science Foundation (CHE-0948417, P.P.P.), the National Natural Science Foundation of China (Grants 21171087, 91122019, 21021062, X.W. and 20825312, J.M.), and the Natural Science Foundation of Jiangsu Province (Grant BK2011549, X.W.) for financial support. We are grateful to the High Performance Computing Centre of Nanjing University for providing the IBM Blade cluster system. Part of the computational work has been done on the Sugon TC5000 high-performance linux cluster at ITCC.

Abstract

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A class of well-defined reversible σ-dimerizations of 9,10-dialkoxyanthracene radical cations are presented. Yellow crystals of the σ-dimerized dication dissociate to purple solutions of monomeric radical cations in solution (see scheme). The identity and stability of radical cations were unequivocally confirmed, providing evidence for reversible σ-dimerizations of persistent radical cations of aromatic systems.

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