Magenetic field induced proton transfer of 18-crown-6-ether/fluoroboric acid/water system: Crystal structure and Hirshfeld surfaces

A new complex with the title system ([2(H3O+)·18-crown-6]· 2[BF4−]) was induced by external magnetic field and occurred the proton transfer from HBF4 to H2O, which contributed to the stronger HF and OF intermolecular interaction and further formed a “compression” effect of crystals stacking. [Displa...

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Bibliographic Details
Published in:Polyhedron 2018-10, Vol.153, p.64-68
Main Authors: Chen, Chen, He, Chang, Zhu, Ying-Yu, He, Xiao-Tong, Hong, Dan-Li, Luo, Yang-Hui, Sun, Bai-Wang
Format: Article
Language:English
Subjects:
18-Crown-6
Crystal structure
Hirshfeld surfaces
Magnetic field
Proton transfer
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Summary:A new complex with the title system ([2(H3O+)·18-crown-6]· 2[BF4−]) was induced by external magnetic field and occurred the proton transfer from HBF4 to H2O, which contributed to the stronger HF and OF intermolecular interaction and further formed a “compression” effect of crystals stacking. [Display omitted] A new complex of the title system ([2(H3O+)·18-crown-6]·2[BF4−]), which was induced by external magnetic field, has been prepared and characterized. When compared with other two members of the same system, the proton transfer induced by magnetic field from HBF4 to H2O has leads to the co-plane of six oxygen atoms in the crown and stronger HF and OF intermolecular interactions, which can be attributed to the closer contacts between 18-crown-6, oxonium ion H3O+ and counterion BF4−. In addition, a compression effect of crystals stacking has been observed. These results are of importance for the evaluation the effect of magnetic field on the host–guest systems.
ISSN:0277-5387
DOI:10.1016/j.poly.2018.06.043