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Outer Surface Interactions of Cucurbit[6]uril That Trigger the Assembly of Supramolecular Three‐Dimensional Polycatenanes
Author(s) -
Cui Xiaowei,
Zhao Wenxuan,
Chen Kai,
Ni XinLong,
Zhang YuanQian,
Tao Zhu
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201605045
Subject(s) - supramolecular chemistry , covalent bond , hydrogen bond , chemistry , ion , crystallography , yield (engineering) , non covalent interactions , supramolecular assembly , dipole , molecule , materials science , crystal structure , organic chemistry , metallurgy
Abstract A supramolecular polycatenane stabilized by outer surface interactions between cucurbit[6]uril (Q[6] or CB[6]) cations and [CdCl 4 ] 2− is reported. The arrangement of the poly‐interlocked supramolecular framework is evidently constructed by a favorable combination of weak non‐covalent interactions such as hydrophobic effects, hydrogen bonding, ion–dipole interactions, and C−H⋅⋅⋅Cl interactions in the solid state. Further study suggests that such 3D poly‐interlocked species could be rapidly precipitated from the mixture solution in high yield owing to electrostatic interaction of the [CdCl 4 ] 2− anion with the electropositive outer surface of Q[6] host. This work thus demonstrates a simple, low‐cost, and efficient non‐covalent approach for the construction of a infinite 3D interlocked structure in water besides through coordination or covalent bonds.