Tritopic ion-pair receptors based on anion–π interactions for selective CaX2 binding

Jian Luo; Yu-Fei Ao; Christian Malm; Johannes Hunger; Qi-Qiang Wang; De-Xian Wang

doi:10.1039/C8DT01727A

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Tritopic ion-pair receptors based on anion–π interactions for selective CaX₂ binding†

Jian Luo,^ab Yu-Fei Ao,^a Christian Malm,^c Johannes Hunger,

^c Qi-Qiang Wang

*^ab and De-Xian Wang

*^ab

Author affiliations

* Corresponding authors

^a Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
E-mail: qiqiangw@iccas.ac.cn, dxwang@iccas.ac.cn

^b University of Chinese Academy of Sciences, Beijing 100049, China

^c Molecular Spectroscopy Department, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany

Abstract

Selective ion-pair binding of CaX₂ (X = Br⁻, I⁻) was realized by a tritopic receptor containing homoditopic anion–π binding sites and a pentaethylene glycol site. The receptor formed an unusual solvent-separated ion-pair complex with CaI₂ and a contact one with CaBr₂, and can be applied to selectively dissolve calcium halides in organic solvents.

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Article information

DOI: https://doi.org/10.1039/C8DT01727A
Article type: Communication
Submitted: 01 May 2018
Accepted: 17 May 2018
First published: 18 May 2018

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Dalton Trans., 2018,47, 7883-7887

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Tritopic ion-pair receptors based on anion–π interactions for selective CaX₂ binding

J. Luo, Y. Ao, C. Malm, J. Hunger, Q. Wang and D. Wang, Dalton Trans., 2018, 47, 7883 DOI: 10.1039/C8DT01727A

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Dalton Transactions