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首页> 外文期刊>Inorganic Chemistry Communications >Synthesis, crystal structure and nuclease activity of a new Mn(II) complex involving 2-(2-1H-imidazolyl)-1H-imdazolium ligand
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Synthesis, crystal structure and nuclease activity of a new Mn(II) complex involving 2-(2-1H-imidazolyl)-1H-imdazolium ligand

机译:含2-(2-1H-咪唑基)-1H-咪唑配体的新型Mn(II)配合物的合成,晶体结构和核酸酶活性

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摘要

A new Mn(II) complex of Mn(H3biim)2(NCS)2Cl2 (H3biim=2-(2-1H-imidazolyl)-1H-imidazolium) was synthesized and characterized by elemental analyses and X-ray single crystal diffraction. In the X-ray crystallography structure, the Manganese (II) ion is coordinated by two nitrogen atoms of two 2-(2-1H-imidazolyl)-1H-imdazolium, two nitrogen atoms of two thiocyanate ions and two Cl~-. The interaction of the complex with calf thymus DNA was investigated through fluorescence spectroscopy and viscosity measurement. These results show that the Mn(II) complex can electrostatically bind to the phosphate group of DNA backbone. Furthermore, the complex is able to promote pBR322 DNA cleavage at pH = 7.2 and 37 °C. The hydrolytic cleavage of DNA by the complex was supported by the evidence from free radical quenching, anaerobic experiment.
机译:合成了一种新的Mn(H3biim)2(NCS)2Cl2(H3biim = 2-(2-1H-咪唑基)-1H-咪唑鎓)Mn(II)配合物,并通过元素分析和X射线单晶衍射对其进行了表征。在X射线晶体学结构中,锰(II)离子由两个2-(2-1H-咪唑基)-1H-咪唑鎓的两个氮原子,两个硫氰酸根离子的两个氮原子和两个Cl--配位。通过荧光光谱和粘度测量研究了复合物与小牛胸腺DNA的相互作用。这些结果表明Mn(II)配合物可以静电结合到DNA骨架的磷酸基团。此外,该复合物能够在pH = 7.2和37°C的条件下促进pBR322 DNA切割。自由基淬灭,厌氧实验的证据支持了复合物对DNA的水解切割。

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