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Journal of Chemical Crystallography

, Volume 39, Issue 3, pp 221–224 | Cite as

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

  • Shouwu Wang
  • Liyan Wang
  • Baolong Li
  • Yong Zhang
Original Paper

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.

Keywords

Cobalt(II) complex Crystal structure Coordination polymer Magnetic properties Dicyanamide Benzimidazole 

Notes

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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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Shouwu Wang
    • 1
    • 2
  • Liyan Wang
    • 2
  • Baolong Li
    • 2
  • Yong Zhang
    • 2
  1. 1.School of Chemical EngineeringHuaihai Institute of TechnologyLianyungangPeople’s Republic of China
  2. 2.College of Chemistry and Chemical Engineering, Key Laboratory of Organic Synthesis of Jiangsu ProvinceSuzhou UniversitySuzhouPeople’s Republic of China

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