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Synthesis, crystal structures, and urease inhibitory activities of two azido-bridged polynuclear copper(II) complexes with Schiff bases

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Abstract

Two azido-bridged polynuclear Cu(II) complexes with the formulae [Cu(L1)(μ1,3-N3)] n and [Cu(L2)(μ1,3-N3)] n (HL1 = 2-[(2-morpholin-4-ylethylimino)methyl]phenol, HL2 = 2-methoxy-6-[(2-piperidin-1-ylethylimino)methyl]phenol), have been synthesized and characterized by physico-chemical and spectroscopic methods. The Cu atom in each of the complexes is five-coordinate in a square pyramidal geometry, with one O and two N atoms of a Schiff base ligand and one terminal N atom of a bridging azido ligand defining the base-plane, and with another terminal N atom of a symmetry-related azido ligand occupying the apical position. The molecules are linked through end-to-end azido bridges, forming one-dimensional polymeric chains. Both of the complexes show moderate inhibitory activities against jack bean urease.

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Acknowledgments

This work was financially supported by the Office of Dalian Science & Technology (Project No. 2007J23JH018), and by the Scientific Research Foundation of the Education Office of Liaoning Province (Project No. 20060495).

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Authors and Affiliations

  1. Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, 116029, People’s Republic of China

    Peng Hou, Zhong-Lu You, Lin Zhang, **ao-Li Ma & Li-Li Ni

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  1. Peng Hou
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  2. Zhong-Lu You
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  3. Lin Zhang
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Correspondence to Zhong-Lu You.

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Hou, P., You, ZL., Zhang, L. et al. Synthesis, crystal structures, and urease inhibitory activities of two azido-bridged polynuclear copper(II) complexes with Schiff bases. Transition Met Chem 33, 1013–1017 (2008). https://doi.org/10.1007/s11243-008-9146-z

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