Synthesis, crystal structures, and DNA-binding properties of zinc(II) and nickel(II) complexes with tris[2-(N-ethyl)benzimidazylmethyl]amine and cinnamate ligands

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• 作者：Huilu Wu (1)
  Ying Bai (1)
  Xiaoli Wang (1)
  Yanhui Zhang (1)
  Furong Shi (1)
  Yuchen Bai (1)
  Guolong Pan (1)
  Jin Kong (1)
  
• 刊名：Transition Metal Chemistry
• 出版年：2013
• 出版时间：August 2013
• 年：2013
• 卷：38
• 期：5
• 页码：553-561
• 全文大小：733KB
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• 作者单位：Huilu Wu (1)
  Ying Bai (1)
  Xiaoli Wang (1)
  Yanhui Zhang (1)
  Furong Shi (1)
  Yuchen Bai (1)
  Guolong Pan (1)
  Jin Kong (1)
  
  1. School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, People’s Republic of China
  

文摘

Tris[2-(N-ethyl)benzimidazylmethyl]amine (Etntb) and two of its complexes, [Zn(Etntb)(cinnamate)]NO3·2DMF (1) and [Ni(Etntb)(cinnamate)·(H2O)]NO3 (2) have been synthesized and characterized by physico-chemical and spectroscopic methods. Single-crystal X-ray diffraction revealed that the complexes have different structures. In complex 1, the coordination sphere around Zn(II) is distorted trigonal bipyramidal, whereas the coordination sphere around Ni(II) is distorted octahedral in complex 2. The DNA-binding properties of the free ligand and its complexes have been investigated by electronic absorption, fluorescence, and viscosity measurements. The results suggest that the ligand and both complexes bind to DNA via an intercalative mode, and their binding affinity for DNA follows the order 1?>?2> ligand.