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Synthesis, crystal structures and spectroscopic properties of two novel oxamido-bridged trinuclear complexes [Cu2M] (M = Cu, Zn)

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Abstract

Based on the complex ligand CuL (H2L = 2,3-dioxo-5,6:14,15-dibenzo-7,13-diphenyl-1,4,8,12-tetraazacyclo-pentadeca-7,13-diene), two novel oxamido-bridged trinuclear complexes have been prepared. They are of the formula Cu(CuL)2(ClO4)2 · 4C2H5OH (1) and [(CuL)2Zn(C2H5OH)2](ClO4)2 · 2C2H5OH (2). The crystal structures of the two complexes have been determined by X-ray crystallography. In complex (1), the central Cu is in a complete square-planar environment, bonding to four oxygen atoms of the oxamido macrocyclic ligand, while in complex (2), the Zn center is six-coordinate in an octahedral geometry, the four oxygen donors from macrocyclic ligand form the basal plane and the axial positions are occupied by other oxygen atoms from C2H5OH molecules. The spectroscopic properties have been investigated and the EPR spectra have been simulated by WINEPR and SimFonia programs.

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Authors and Affiliations

  1. Department of Chemistry, Nankai University, Tian**, 300071, P.R. China

    Yan-Hong Zhang, Qing-Lun Wang & Guang-Ming Yang

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  1. Yan-Hong Zhang
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  2. Qing-Lun Wang
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  3. Guang-Ming Yang
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Correspondence to Guang-Ming Yang.

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Zhang, YH., Wang, QL. & Yang, GM. Synthesis, crystal structures and spectroscopic properties of two novel oxamido-bridged trinuclear complexes [Cu2M] (M = Cu, Zn). Transition Met Chem 31, 856–859 (2006). https://doi.org/10.1007/s11243-006-0069-2

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  • DOI: https://doi.org/10.1007/s11243-006-0069-2

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