4.7 Article

Copper(ii) and zinc(ii) complexation with N-ethylene hydroxycyclams and consequences on the macrocyclic backbone configuration

期刊

DALTON TRANSACTIONS
卷 51, 期 22, 页码 8640-8656

出版社

ROYAL SOC CHEMISTRY
DOI: 10.1039/d2dt00941b

关键词

-

资金

  1. Ministere de l'Enseignement Superieur et de la Recherche
  2. Centre National de la Recherche Scientifique
  3. Brest Metropole

向作者/读者索取更多资源

This study investigates the properties of Cu(II) and Zn(II) complexes of four cyclams and cross-bridged cyclams N-functionalized by a hydroxyethyl arm. The results show that N-functionalization with a hydroxyethyl group stabilizes the complexes kinetically and electrochemically, while N-methylation causes distortion of the coordination geometry and decreases the kinetic inertness of the complexes.
We report a series of four cyclams and cross-bridged cyclams, N-functionalized by one hydroxyethyl arm, which may incorporate additional methyl(s) group(s). The Cu(ii) and Zn(ii) complexes of these ligands were synthesized and fully characterized. The investigation of the metal complexes in solid-state and in solution was carried via X-ray diffraction, NMR, EPR, absorption spectroscopy and DFT calculations. The influence of N-functionalization on their structural/stereochemical properties, electrochemical behavior and kinetic inertness was carefully studied and identified. N-Functionalization by a hydroxyethyl group did not influence importantly the stereochemical properties of the complexes. However, it stabilized the complexes kinetically and electrochemically. As for N-methylation, it induces significant distortion of the coordination geometry, decreasing the kinetic inertness of the complexes and stabilizing Cu+. Overall, this work expanded the family of cyclam and cross-bridged cyclam metal complexes and provides a detailed analysis of their structural features. The rather large body of data accumulated for this family of complexes provides opportunities to design systems with pre-determined properties for specific applications.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据