期刊
JOURNAL OF PHYSICAL ORGANIC CHEMISTRY
卷 29, 期 5, 页码 244-250出版社
WILEY
DOI: 10.1002/poc.3526
关键词
pyridine-azacrown ether compounds; complex formation; NMR-spectroscopy; potentiometric titration method; X-ray analysis
资金
- RFBR [13-03-01304, 15-03-04695, 14-03-31932]
This research concerns the analysis of the proton and metal ion binding of amide macrocycles of different structures and sizes by potentiometric, H-1 NMR and X-ray diffraction methods. Protonated ligands exist as a 3D network structures. The ligands form 1:1 complexes with heavy metal ions (Cu2+, Cd2+, Pb2+, Zn2+, and Ni2+) in aqueous solutions and demonstrate the high selectivity towards Cu2+ cations. The pyridine-2,6-dicarbamide fragment provides structural rigidity to crown ether, resulting the molecule has an open cavity and faster kinetics of metal complexes formation. Copyright (c) 2015 John Wiley & Sons, Ltd.
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