Synthesis and Crystal Structures of Coordination Complexes Containing Cu2I2 Units and Their Application in Luminescence and Catalysis

Authors

  • Huaixia Zhao,

    1. State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (P. R. China), Fax: (+86) 591-83714946
    2. University of Chinese Academy of Sciences, Beijing 100049 (P. R. China)
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  • Dr. Xinxiong Li,

    1. State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (P. R. China), Fax: (+86) 591-83714946
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  • Dr. Jinyun Wang,

    1. State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (P. R. China), Fax: (+86) 591-83714946
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  • Dr. Liuyi Li,

    1. State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (P. R. China), Fax: (+86) 591-83714946
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  • Prof. Ruihu Wang

    Corresponding author
    1. State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (P. R. China), Fax: (+86) 591-83714946
    • State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (P. R. China), Fax: (+86) 591-83714946

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Abstract

The reaction of bis- or tris-chelating nitrogen-containing ligands (L1–L5) with CuI gave rise to five coordination complexes consisting of Cu2I2 dimeric units. L1 in complex 1 adopts a cis conformation and links Cu2I2 into a dinuclear structure. L2 and L3 in complexes 2 and 3 exhibit a trans conformation, and the alternative linkage of L2 or L3 and Cu2I2 results in the formation of a 1D chain. In complex 4, two pyrazolyl-pyridine units of L4 at the same side of the central phenyl ring are connected to Cu2I2 forming a tetranuclear macrocycle, and the third pyrazolyl-pyridine unit at the other side of the central phenyl ring further links the macrocycle into a 1D chain. L5 bridges Cu2I2 in a cis conformation forming a tetranuclear complex, which is very different from 1 owing to the difference of the electronic property between pyrazolyl and triazolyl rings. The coordination nitrogen atoms in two pairs of ortho-positioned nitrogen-containing chelating rings in L1 and L5 are directed toward opposite and the same directions, respectively. Complexes 14 containing pyrazolyl-pyridine units showed luminescence whereas no clear emission was observed in complex 5 containing triazolyl-pyridine units, despite the fact that they were investigated under the same conditions. The application of complexes 15 in the copper(I)-catalyzed Ullmann cross-coupling reaction and azide–alkyne cycloaddition reaction was preliminarily evaluated.

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