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Two-dimensional Supramolecular Architecture of Oxamido-bridged Binuclear Copper(II) Complex Cu2(oxen)(NCS)2(DMF)2

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Abstract

An oxamido-bridged binuclear copper(II) complex, Cu2(oxen)(NCS)2(DMF)2 (1) (H2oxen = N,N′-bis(2-aminoethyl)oxamide, DMF = dimethylformamide), has been synthesized by the reaction of Cu(oxen) · 2H2O with CuCl2 · 2H2O and KSCN in DMF/CH3OH solution, and characterized by elementary analysis, FT-IR spectra and X-ray single-crystal diffraction. Structural analysis reveals that complex 1 forms a centrosymmetric binuclear molecule in which an oxamido group in the trans conformation bridges two crystallographically equivalent five-coordinate copper(II) ions with Cu–Cu distance of 5.279(2) Å. The complex molecules are assembled into a novel 2D layer through weak Cu⋯S interactions (d Cu–S = 3.341(4) Å) and intermolecular hydrogen bonds. Viewed along the crystallographic b axis, layers display an interesting hydrophobic–hydrophilic–hydrophobic sandwich arrangement, with the hydrophobic layers dominated by dipole interaction of DMF molecules.

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Acknowledgments

We acknowledge the financial support of the National Natural Science Foundation of China (No. 30672515) and Ocean University of China.

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Authors and Affiliations

  1. Marine Drug & Food Institute, Ocean University of China, 5 Yushan Road, Qingdao, Shandong, 266003, People’s Republic of China

    Feng-Ying Dong, Yan-Tuan Li & Zhi-Yong Wu

  2. Department of Chemistry, Liaocheng University, Liaocheng, Shandong, 252059, People’s Republic of China

    Jian-Min Dou & Da-Qi Wang

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  1. Feng-Ying Dong
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  2. Yan-Tuan Li
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Correspondence to Yan-Tuan Li.

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Dong, FY., Li, YT., Wu, ZY. et al. Two-dimensional Supramolecular Architecture of Oxamido-bridged Binuclear Copper(II) Complex Cu2(oxen)(NCS)2(DMF)2 . J Chem Crystallogr 37, 445–449 (2007). https://doi.org/10.1007/s10870-007-9190-0

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