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Acid-Induced Degradation and Ancillary Ligand Replacement of Biscyclometalated Iridium(III) Complexes

Authors

  • Yuyang Zhou,

    1. Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123 (P.R. China), Fax: (+86) 512-62872181
    2. University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049 (P.R. China)
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  • Dr. Wanfei Li,

    1. Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123 (P.R. China), Fax: (+86) 512-62872181
    2. SunaTech Inc., bioBAY, Suzhou Industrial Park, Suzhou, Jiangsu 215123 (P.R. China)
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  • Dr. Yang Liu,

    Corresponding author
    1. Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123 (P.R. China), Fax: (+86) 512-62872181
    2. SunaTech Inc., bioBAY, Suzhou Industrial Park, Suzhou, Jiangsu 215123 (P.R. China)
    • Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123 (P.R. China), Fax: (+86) 512-62872181
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  • Prof. Dr. Ming Zhou

    Corresponding author
    1. Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123 (P.R. China), Fax: (+86) 512-62872181
    2. SunaTech Inc., bioBAY, Suzhou Industrial Park, Suzhou, Jiangsu 215123 (P.R. China)
    • Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123 (P.R. China), Fax: (+86) 512-62872181
    Search for more papers by this author

Abstract

Three biscyclometalated iridium(III) complexes with three different ancillary ligands have been investigated with respect to the final products of acid-induced transformation in coordinating or non-coordinating solvents. All of these complexes, represented as [Ir(LC^N)2LO^O] and [Ir(LC^N)2LN^O], are susceptible to acid attack, followed by the departure of the ancillary ligand, LO^O or LN^O. Depending on the coordinating ability of the solvent molecule and whether or not a coordinating anion exists, the final product will be either a solvento complex or a dichloro-bridged iridium(III) dimer. Although coexistence of the solvento complex and dichloro-bridged iridium(III) dimer was observed under certain conditions, the conversion of the solvento complex into the dichloro-bridged iridium(III) dimer has been proven.

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