期刊
CHINESE CHEMICAL LETTERS
卷 30, 期 5, 页码 953-956出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2019.02.010
关键词
Halogen bond; Hydrogen bond; Macrocycle; Foldamer; Double helix
资金
- National Natural Science Foundation of China [21772026, 21432004]
The crystal structures of three intramolecularly hydrogen bonded rigid aromatic amide derivatives, which all bear one iodine atom at one end as the donor and one pyridine unit at the other end as the acceptor, have been described to reveal the utility of halogen bonding in inducing the formation of supramolecular macrocycles. All the three compounds formed intermolecular I center dot center dot center dot N halogen bonding. For short compound 1, halogen bonding induced the formation of an extended supramolecular array. For longer folded compounds 2 and 3, halogen bonding could hold two molecules to form supramolecular macrocycles even by adopting a highly distorted, energetically less favorable conformation (for 3). Depending on the solvent for the growth of crystals, compound 3 could also gave rise to a halogen bonded supramolecular double helix. (C) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
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