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Silver mediated duplex-type complexes of pyrimidinophanes and their acyclic counterparts

机译：银介导的双链型嘧啶型复合物及其无循环对应物

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摘要

Complexation of metal cations with acyclic and macrocyclic nucleobase derivatives containing uracil and 2-thiocytosine units linked by polymethylene spacers was studied. The investigated compounds have demonstrated high extraction selectivity for the Ag+ ion over a large number of competitive cations (Na+, Ca2+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+). The structure and composition of Ag+ complexes have been investigated by a variety of physical-chemical methods. The crystal structures of three Ag+ complexes with 2-thiocytosine have been established by X-ray analysis. To refine the composition of the complexes formed in solution, the self-diffusion coefficients have been determined by NMR spectroscopy. For the estimation of the most reliable complex structures, the combined analysis of NMR data and DFT calculations was successfully applied. It was shown that the tendency of 2-thiocytosine moieties to form N1-nitrogen coordinated complexes and the presence of a polymethylene spacer between amine groups in the pyrimidinophanes provides the formation of Ag+ mediated duplex-type multi-component complexes.
机译：研究了金属阳离子与含有聚亚甲基间隔物连接的尿嘧啶和2-硫型菌属单元的含有无环和大环核苷酸单元的络合。所研究的化合物在大量竞争性阳离子（Na +，Ca2 +，CO 2 +，Ni2 +，Cu2 +，Zn2 +，CD2 +）上，对Ag +离子进行了高萃取选择性。通过各种物理化学方法研究了Ag +络合物的结构和组合物。通过X射线分析建立了三种Ag +络合物的三种Ag +络合物的晶体结构。为了优化在溶液中形成的复合物的组成，通过NMR光谱法确定了自扩散​​系数。为了估计最可靠的复杂结构，成功应用了NMR数据和DFT计算的综合分析。结果表明，2-硫部分的倾向，以形成N 1 - 氮配位复合物，并在pyrimidinophanes胺基团之间的聚垫片的存在提供的Ag +介导的双链型多组分复合物的形成。

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  • 来源
    《RSC Advances》 |2015年第21期|共12页
  • 作者

    Podyachev Sergey N.; Masliy Alexey N.; Semenov Vyacheslav E.; Syakaev Victor V.; Sudakova Svetlana N.; Voronina Julia K.; Ivanov Vladimir T.; Kuznetsov Andrey M.; Gogolashvili Edward L.; Reznik Vladimir S.; Konovalov Alexander I.;

  • 作者单位

    Russian Acad Sci Kazan Sci Ctr AE Arbuzov Organ &

    Phys Chem Inst Kazan 420088 Russia;

    Kazan Natl Res Technol Univ Kazan 420015 Russia;

    Russian Acad Sci Kazan Sci Ctr AE Arbuzov Organ &

    Phys Chem Inst Kazan 420088 Russia;

    Russian Acad Sci Kazan Sci Ctr AE Arbuzov Organ &

    Phys Chem Inst Kazan 420088 Russia;

    Russian Acad Sci Kazan Sci Ctr AE Arbuzov Organ &

    Phys Chem Inst Kazan 420088 Russia;

    Russian Acad Sci Kazan Sci Ctr AE Arbuzov Organ &

    Phys Chem Inst Kazan 420088 Russia;

    Russian Acad Sci Kazan Sci Ctr AE Arbuzov Organ &

    Phys Chem Inst Kazan 420088 Russia;

    Kazan Natl Res Technol Univ Kazan 420015 Russia;

    Russian Acad Sci Kazan Sci Ctr AE Arbuzov Organ &

    Phys Chem Inst Kazan 420088 Russia;

    Russian Acad Sci Kazan Sci Ctr AE Arbuzov Organ &

    Phys Chem Inst Kazan 420088 Russia;

    Russian Acad Sci Kazan Sci Ctr AE Arbuzov Organ &

    Phys Chem Inst Kazan 420088 Russia;

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  • 正文语种 eng
  • 中图分类 化学;
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