Molecular Crystals and Liquid Crystals p. 3 - 9 (2010)
Update date:2022-08-11
Topics:
Li, Jiang-Sheng
Fan, Mei-Lian
Chen, Li-Gong
Hoekelek, Tuncer
Huang, Peng-Mian
A new [2]pseudorotaxane from the 1,2-bis(isoquinolinium)ethane axle and the dibenzo-24-crown-8 ether wheel and its self-assembly were investigated by 1H NMR spectroscopy and single crystal X-ray diffraction technique. The results demonstrated that the supramolecular adduct was held together by three noncovalent interaction such as N+ ... O ion-dipole interactions, C-H ... O hydrogen bonding, and π-stacking between electron-poor isoquinolinium rings of the axle and electron-rich catechol rings of the wheel. They, furthermore, showed that the phenyl ring as a substituent or a fused ring on pyridinium has a similar effect on the association ability. Copyright Taylor & Francis Group, LLC.
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