• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>New Journal of Chemistry >Synthesis, structure and metal ion coordination of novel benzodiazamacrocyclic ligands bearing pyridyl and picolinate pendant side-arms
【24h】

Synthesis, structure and metal ion coordination of novel benzodiazamacrocyclic ligands bearing pyridyl and picolinate pendant side-arms

机译：新型苯二氮酰基丙烯环配体的合成，结构和金属离子配体含吡啶基和吡啶胺侧侧臂的

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Novel derivatives of benzodiaza-15-crown-5 (B15C5) and benzodiaza-18-crown-6 (B18C6) ether containing pyridyl (Py) and picolinate (Pic) pendant arms at amine nitrogen atoms of the macrocycle residue were synthesized. The protonation constants of the studied compounds and stability constants of their complexes with a range of heavy and transition metal ions (Cu2+, Zn2+, Ni2+, Cd2+, Pb2+) were determined in aqueous solutions by the potentiometric method. The obtained data showed that all ligands form rather stable complexes with the studied cations of different compositions; however, compounds with picolinate groups were found to be more efficient complexons. NMR studies revealed that in the case of B15C5 type ligands the complex geometry depends on the metal ion size: small radius metal ions (like Zn2+) are placed in the center of the crown ether cavity and the coordination by the pendant groups occurs at opposite sides of the macrocyclic plane, whereas binding of large cations (such as Cd2+ and Pb2+) results in a distorted structure of the complexes. Additional information concerning the structure of complexes was obtained from the analysis of X-ray-diffraction data.
机译：合成苯并二核氮A-15-Crown-5（B15C5）和苯二氮腺炎-18-冠-6（B18C6）含有吡啶基（PY）和吡啶胺（PIC）侧臂的新型衍生物，合成宏循环残余物的胺氮原子的吡啶基（PY）和吡啶酰胺（PIC）侧臂。通过电位法在水溶液中测定所研究的化合物和其配合物的稳定性常数的质子化常数，其具有一系列重和过渡金属离子（Cu 2 +，Zn2 +，Ni2 +，CD2 +，PB2 +，CD2 +，PB2 +）。所获得的数据显示所有配体与不同组合物的研究相当稳定的复合物;然而，发现吡啶酸盐基团的化合物更有效的复合剂。 NMR研究表明，在B15C5型配体的情况下，复杂的几何形状取决于金属离子尺寸：将小半径金属离子（如Zn2 +）置于冠状醚腔的中心，并且通过侧侧的配位发生在相对侧宏环平面，而大阳离子（如CD2 +和PB2 +）的结合导致复合物的扭曲结构。从X射线衍射数据的分析中获得了关于复合物结构的附加信息。

著录项

  • 来源
    《New Journal of Chemistry》 |2019年第38期|共15页
  • 作者

    Panchenko Pavel A.; Zubenko Anastasia D.; Chernikova Ekaterina Y.; Fedorov Yuri V; Pashanova Anna V; Karnoukhova Valentina A.; Fedyanin Ivan V; Fedorova Olga A.;

  • 作者单位

    Russian Acad Sci AN Nesmeyanov Inst Organoelement Cpds INEOS RAS Vavilova Str 28 Moscow 119991 Russia;

    Russian Acad Sci AN Nesmeyanov Inst Organoelement Cpds INEOS RAS Vavilova Str 28 Moscow 119991 Russia;

    Russian Acad Sci AN Nesmeyanov Inst Organoelement Cpds INEOS RAS Vavilova Str 28 Moscow 119991 Russia;

    Russian Acad Sci AN Nesmeyanov Inst Organoelement Cpds INEOS RAS Vavilova Str 28 Moscow 119991 Russia;

    Russian Acad Sci AN Nesmeyanov Inst Organoelement Cpds INEOS RAS Vavilova Str 28 Moscow 119991 Russia;

    Russian Acad Sci AN Nesmeyanov Inst Organoelement Cpds INEOS RAS Vavilova Str 28 Moscow 119991 Russia;

    Russian Acad Sci AN Nesmeyanov Inst Organoelement Cpds INEOS RAS Vavilova Str 28 Moscow 119991 Russia;

    Russian Acad Sci AN Nesmeyanov Inst Organoelement Cpds INEOS RAS Vavilova Str 28 Moscow 119991 Russia;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号