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Binding of zinc(II) macrocycles toward carboxylate ligands

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Abstract

Three new zinc(II) complexes, Zn(L1)(NO3)2 (1), {[Zn(L1)(fumarate)]·2H2O} n (2) and {[Zn(L2)(fumarate)]·DMF} n (3) (L = 3,14-dimethyl-2,6,13,17-tetraazatricyclo [14,4,01.18,07.12]docosane) have been synthesized and characterized by analytical, spectroscopic, thermal and X-ray diffraction methods. The structure of the discrete neutral complex (1) shows that the central zinc(II) ion is coordinated axially by two nitrate ligands. In the structures (2) and (3), the carboxylate groups of the bridging fumarate ligands are coordinated to zinc(II) macrocycles, resulting in the formation of 1D coordination polymers. Apart from the fairly strong Zn–O bonds in (2) and (3), it is observed that the hydrogen bonds between the pre-organized N–H groups of the macrocycle and axial ligands appear to be important for the design and development of metal complexes having a strong Zn–O bond.

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Acknowledgments

This work was supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD), Basic Research Promotion Fund) (KRF-2008-521-C00137).

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Authors and Affiliations

  1. Department of Chemistry, Pukyong National University, Busan, 608-737, Korea

    Jin Suk Kwag & Ju Chang Kim

  2. Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6, Canada

    Alan J. Lough

  3. Korea Research Institute of Chemical Technology, Daejeon, 305-600, Korea

    Byung Min Lee

Authors
  1. Jin Suk Kwag
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  2. Ju Chang Kim
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  3. Alan J. Lough
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  4. Byung Min Lee
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Correspondence to Ju Chang Kim.

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Kwag, J.S., Kim, J.C., Lough, A.J. et al. Binding of zinc(II) macrocycles toward carboxylate ligands. Transition Met Chem 35, 41–47 (2010). https://doi.org/10.1007/s11243-009-9293-x

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  • DOI: https://doi.org/10.1007/s11243-009-9293-x

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