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The present work reports the preparation of an open\u2010cage C<jats:sub>60<\/jats:sub> derivative with a hydroxy group pointing towards the centre of the cavity, which can coordinate to a metal cation, thus acting as a bait\/hook to trap the metal cation such as the lithium cation in neutral LiF and the beryllium cation in the cationic [BeF]<jats:sup>+<\/jats:sup> species. Other metal salts could not be inserted under similar conditions. The structure of MF in the cage was unambiguously determined by single\u2010crystal X\u2010ray diffraction. Owing to its tendency to undergo polycoordination, Li<jats:sup>+<\/jats:sup> monomer salts have not been isolated before, despite extensive research on Li bonds. The present results provide a unique example of a Li bond.<\/jats:p>","DOI":"10.1002\/anie.202300151","type":"journal-article","created":{"date-parts":[[2023,1,31]],"date-time":"2023-01-31T11:39:52Z","timestamp":1675165192000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Open\u2010Cage Fullerene as a Selective Molecular Trap for LiF\/[BeF]<sup>+<\/sup>"],"prefix":"10.1002","volume":"62","author":[{"given":"Rui","family":"Gao","sequence":"first","affiliation":[{"name":"Beijing National Laboratory for Molecular Sciences Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education College of Chemistry and Molecular Engineering Peking University  Beijing 100871 P. R. 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China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jie","family":"Su","sequence":"additional","affiliation":[{"name":"Beijing National Laboratory for Molecular Sciences Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education College of Chemistry and Molecular Engineering Peking University  Beijing 100871 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6646-3452","authenticated-orcid":false,"given":"Liangbing","family":"Gan","sequence":"additional","affiliation":[{"name":"Beijing National Laboratory for Molecular Sciences Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education College of Chemistry and Molecular Engineering Peking University  Beijing 100871 P. R. 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