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Synthesis, Structure and Magnetic Properties of a New Two-dimensional (4,4) Network Cobalt Coordination Polymer with Dicyanamide and Benzimidazole Ligands

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Abstract

The new cobalt(II) coordination polymer [Co(bim)2(dca)2] n (1), (bim = benzimidazole, dca = dicyanamide) was synthesized and characterized. X-ray diffraction analyses reveal that the title complex crystallizes in the monoclinic space group P21/n with a = 9.168(5), b = 9.959(5), c = 9.850(5) Å, β = 105.360(11)o, Z = 2, and R 1 = 0.0308, wR 2 = 0.0728. The coordination geometry of cobalt atom is distorted octahedral, coordinated equatorially by four nitrogen atoms from four dicyanamide ligands, and axially by two nitrogen atoms from two benzimidazole molecules. Each dca ligand links two cobalt(II) atoms and 1 forms a two-dimensional (4,4) network. The spectroscopic and magnetic properties have also been investigated.

Graphical Abstract

The new cobalt(II) coordination polymer [Co(bim)2(dca)2] n (1), (bim = benzimidazole, dca = dicyanamide) was synthesized and characterized by X-ray diffraction analyses. The coordination geometry of cobalt atom is distorted octahedral, coordinated equatorially by four nitrogen atoms from four dicyanamide ligands, and axially by two nitrogen atoms from two benzoimidazole molecules. Each dca ligand links two cobalt(II) atoms and 1 forms a two-dimensional (4,4) network. The spectroscopic and magnetic properties have also been investigated.

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Acknowledgements

We are thankful for financial support from the Natural Science Foundation of China (No. 20671066), the Jiangsu Province (No. BK2006049) and Funds of Key Laboratory of Organic Synthesis of Jiangsu Province.

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Authors and Affiliations

  1. School of Chemical Engineering, Huaihai Institute of Technology, Lianyungang, 222000, People’s Republic of China

    Shouwu Wang

  2. College of Chemistry and Chemical Engineering, Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou University, Suzhou, 215123, People’s Republic of China

    Shouwu Wang, Liyan Wang, Baolong Li & Yong Zhang

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  1. Shouwu Wang
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  2. Liyan Wang
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  3. Baolong Li
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Correspondence to Baolong Li.

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Wang, S., Wang, L., Li, B. et al. Synthesis, Structure and Magnetic Properties of a New Two-dimensional (4,4) Network Cobalt Coordination Polymer with Dicyanamide and Benzimidazole Ligands. J Chem Crystallogr 39, 221–224 (2009). https://doi.org/10.1007/s10870-008-9467-y

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  • DOI: https://doi.org/10.1007/s10870-008-9467-y

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