Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Dalton Trans. 2011 Jan 28;40(4):899-903. doi: 10.1039/c0dt01118e. Epub 2010 Dec 9.
Three different kinds of cyclic imides with imido protons are chosen to interact with Hg(II): succinimide, the simplest cyclic imide (five-membered ring); phthalimide (conjugated five-membered ring); and 1,8-naphthalimide (conjugated six-membered ring). Based on the results of MS, (1)H-NMR, XPS, IR spectroscopy and fluorescence response analyses, it is suggested that N-unsubstituted cyclic imides react specifically with Hg(II) and form imide-Hg-imide complexes through an imido proton-metal exchange process. The reaction is reversible and occurs rapidly at moderate to high pH. This discovery expands the comprehension of the specific interaction of Hg(II) with the nucleobase thymine, and may open up new possibilities in designing novel ligands for sensing and removing Hg(II) based on cyclic imides.
选择三种具有亚氨基质子的环状酰亚胺与 Hg(II)相互作用：琥珀酰亚胺，最简单的环状酰亚胺（五元环）；邻苯二甲酰亚胺（共轭五元环）；1,8-萘酰亚胺（共轭六元环）。根据 MS、（1）H-NMR、XPS、IR 光谱和荧光响应分析的结果，建议 N-未取代环状酰亚胺与 Hg(II)特异性反应，并通过亚氨基质子-金属交换过程形成酰亚胺-Hg-酰亚胺配合物。该反应是可逆的，在中等至较高 pH 值下快速发生。这一发现扩展了对 Hg(II)与碱基胸腺嘧啶特异性相互作用的理解，并可能为基于环状酰亚胺设计新型用于感测和去除 Hg(II)的配体开辟新的可能性。
