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Three Transition Metal Complexes Based on a Rigid Ligand Containing Bis(2-Benzimidazolyl) Groups: Syntheses and Crystal Structures

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Abstract

Three new complexes ([Cu(OBimB)2](Cl)2·(EtOH)2·(H2O)2 1, [Cu(OBimB)2](NO3)2·(EtOH)2 2, [Ni(OBimB)2](NO3)2·(MeCN)2 3 based on a rigid bis(benzimidazoles) ligand OBimB (OBimB = 1,2-bis(2-benzimidazolyl)benzene) have been synthesized and structurally characterized by X-ray single crystal diffractometry. In the structures of the three complexes each metal ion is coordinated by four N atoms from two twisted V-shaped conformational OBimB ligands in a square-planar geometry. The complex units are further linked into a 2D layer supramolecular network by hydrogen bonds and π···π stacking interactions. The electronic absorption spectra of 1, 2, 3 have also been investigated and show that the two transitions around 220 and 280 nm are mainly assigned to intramolecular charge transfer transitions of the ligand (IL).

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Acknowledgments

The supports of Doctoral Foundation of Qingdao University of Science and Technology (QUST) are gratefully acknowledged.

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Authors and Affiliations

  1. Key Laboratory of Rubber-plastics, Ministry of Education, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, People’s Republic of China

    Yue-Yi Deng, Hong-Zhi Wu, Yan-Ling Jin & Fa-Qian Liu

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  1. Yue-Yi Deng
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  2. Hong-Zhi Wu
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  3. Yan-Ling Jin
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  4. Fa-Qian Liu
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Correspondence to Yue-Yi Deng.

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Deng, YY., Wu, HZ., Jin, YL. et al. Three Transition Metal Complexes Based on a Rigid Ligand Containing Bis(2-Benzimidazolyl) Groups: Syntheses and Crystal Structures. J Chem Crystallogr 42, 739–745 (2012). https://doi.org/10.1007/s10870-012-0309-6

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