{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T18:22:51Z","timestamp":1785435771000,"version":"3.56.0"},"reference-count":50,"publisher":"Beilstein Institut","license":[{"start":{"date-parts":[[2025,4,29]],"date-time":"2025-04-29T00:00:00Z","timestamp":1745884800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2025,4,29]],"date-time":"2025-04-29T00:00:00Z","timestamp":1745884800000},"content-version":"am","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2025,4,29]],"date-time":"2025-04-29T00:00:00Z","timestamp":1745884800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"Beijing Municipal Natural Science Foundation","award":["2222025"],"award-info":[{"award-number":["2222025"]}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["22101024"],"award-info":[{"award-number":["22101024"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Beilstein J. Org. Chem."],"accepted":{"date-parts":[[2025,4,16]]},"abstract":"<jats:p>\n                    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 as a cation receptor and a tripodal hexaurea receptor\n                    <jats:bold>L<\/jats:bold>\n                    as an anion receptor to extract cesium salts (chloride, nitrate, carbonate, sulfate, and phosphate) from the solid phase into chloroform. Remarkably, Cs\n                    <jats:sub>3<\/jats:sub>\n                    PO\n                    <jats:sub>4<\/jats:sub>\n                    exhibits the highest extraction efficiency, driven by strong cooperative interactions involving ion-dipole coordination between Cs\n                    <jats:sup>+<\/jats:sup>\n                    and carbonyl (C=O) groups, as well as direct ion-pairing interactions between 18-crown-6-complexed Cs\n                    <jats:sup>+<\/jats:sup>\n                    and hexaurea-bound PO\n                    <jats:sub>4<\/jats:sub>\n                    <jats:sup>3\u2212<\/jats:sup>\n                    . 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.\n                  <\/jats:p>","DOI":"10.3762\/bjoc.21.68","type":"journal-article","created":{"date-parts":[[2025,4,29]],"date-time":"2025-04-29T06:13:12Z","timestamp":1745907192000},"page":"845-853","source":"Crossref","is-referenced-by-count":1,"title":["Unraveling cooperative interactions between complexed ions in dual-host strategy for cesium salt 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