Unraveling Cooperative Interactions between Complexed Ions in Dual-Host Strategy for Cesium Salt Separation

Zhihua Liu; Ya-Zhi Chen; Ji Wang; Wei Zhao; Biao Wu

doi:10.3762/bxiv.2024.73.v1

Unraveling Cooperative Interactions between Complexed Ions in Dual-Host Strategy for Cesium Salt Separation

Zhihua Liu ,
Ya-Zhi Chen ,
Ji Wang ,
Wei Zhao and
Biao Wu

Submitting author affiliation:

Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technolo, Beijing, China

Beilstein Arch. 2024, 202473. https://doi.org/10.3762/bxiv.2024.73.v1

Published 30 Dec 2024

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Show All Preprints Nanotechnology Organic chemistry Bioorganic chemistry / chemical biology Catalysis Chemical methods and reactions Flow and process chemistry Green and sustainable chemistry Materials chemistry Medicinal and pharmaceutical chemistry Nano- and molecular-scale electronics Nano-biomaterials and bioscience Nanomagnetics Nanomaterials, thin films and nanointerfaces Nanomedicine Nanometrology and nanomechanics Nano-optics Nanopatterning, self-assembly and nanofabrication Nanostructures for energy and sensing applications Natural products chemistry Organo main group chemistry Other nanotechnology (unclassified) Other organic chemistry (unclassified) Photochemistry and photovoltaics Physical organic chemistry Supramolecular chemistry

Abstract

The dual-host strategy offers a straightforward approach to ion separation, yet the nature of cooperative interactions between receptor-complexed cations and anions remains poorly understood. In this study, we utilize [18] crown-6 ether as a cation receptor and a tripodal hexaurea receptor L as an anion receptor to extract cesium salts (chloride, nitrate, carbonate, sulfate, and phosphate) from the solid phase into chloroform. Remarkably, Cs₃PO₄ exhibits the highest extraction efficiency, driven by strong cooperative interactions involving ion-dipole coordination between Cs⁺ and carbonyl (C=O) groups, as well as direct ion-pairing interactions between [18] crown-6-complexed Cs⁺ and hexaurea-bound PO₄^3–. Single-crystal structural analysis corroborates these interactions, shedding light on the underlying mechanisms and providing valuable guidance for the rational design of advanced dual-host systems for selective ion separation.

Keywords: Anion binding; cesium extraction; dual-host strategy; ion-pair interaction; solid-liquid extraction

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Liu, Z.; Chen, Y.-Z.; Wang, J.; Zhao, W.; Wu, B. Beilstein Arch. 2024, 202473. doi:10.3762/bxiv.2024.73.v1

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© 2024 Liu et al.; licensee Beilstein-Institut.
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