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Article: Selective Separation of Hexachloroplatinate(IV) Dianions Based on Exo-Binding with Cucurbit[6]uril

TitleSelective Separation of Hexachloroplatinate(IV) Dianions Based on Exo-Binding with Cucurbit[6]uril
Authors
Keywordsanion separation
co-crystallization
outer-surface interactions
precious metals
resource recovery
supramolecular chemistry
Issue Date2021
Citation
Angewandte Chemie - International Edition, 2021, v. 60, n. 32, p. 17587-17594 How to Cite?
AbstractThe recognition and separation of anions attracts attention from chemists, materials scientists, and engineers. Employing exo-binding of artificial macrocycles to selectively recognize anions remains a challenge in supramolecular chemistry. We report the instantaneous co-crystallization and concomitant co-precipitation between [PtCl6]2− dianions and cucurbit[6]uril, which relies on the selective recognition of these dianions through noncovalent bonding interactions on the outer surface of cucurbit[6]uril. The selective [PtCl6]2− dianion recognition is driven by weak [Pt−Cl⋅⋅⋅H−C] hydrogen bonding and [Pt−Cl⋅⋅⋅C=O] ion–dipole interactions. The synthetic protocol is highly selective. Recognition is not observed in combinations between cucurbit[6]uril and six other Pt- and Pd- or Rh-based chloride anions. We also demonstrated that cucurbit[6]uril is able to separate selectively [PtCl6]2− dianions from a mixture of [PtCl6]2−, [PdCl4]2−, and [RhCl6]3− anions. This protocol could be exploited to recover platinum from spent vehicular three-way catalytic converters and other platinum-bearing metal waste.
Persistent Identifierhttp://hdl.handle.net/10722/327729
ISSN
2023 Impact Factor: 16.1
2023 SCImago Journal Rankings: 5.300
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWu, Huang-
dc.contributor.authorWang, Yu-
dc.contributor.authorJones, Leighton O.-
dc.contributor.authorLiu, Wenqi-
dc.contributor.authorZhang, Long-
dc.contributor.authorSong, Bo-
dc.contributor.authorChen, Xiao Yang-
dc.contributor.authorStern, Charlotte L.-
dc.contributor.authorSchatz, George C.-
dc.contributor.authorStoddart, J. Fraser-
dc.date.accessioned2023-04-24T05:09:33Z-
dc.date.available2023-04-24T05:09:33Z-
dc.date.issued2021-
dc.identifier.citationAngewandte Chemie - International Edition, 2021, v. 60, n. 32, p. 17587-17594-
dc.identifier.issn1433-7851-
dc.identifier.urihttp://hdl.handle.net/10722/327729-
dc.description.abstractThe recognition and separation of anions attracts attention from chemists, materials scientists, and engineers. Employing exo-binding of artificial macrocycles to selectively recognize anions remains a challenge in supramolecular chemistry. We report the instantaneous co-crystallization and concomitant co-precipitation between [PtCl6]2− dianions and cucurbit[6]uril, which relies on the selective recognition of these dianions through noncovalent bonding interactions on the outer surface of cucurbit[6]uril. The selective [PtCl6]2− dianion recognition is driven by weak [Pt−Cl⋅⋅⋅H−C] hydrogen bonding and [Pt−Cl⋅⋅⋅C=O] ion–dipole interactions. The synthetic protocol is highly selective. Recognition is not observed in combinations between cucurbit[6]uril and six other Pt- and Pd- or Rh-based chloride anions. We also demonstrated that cucurbit[6]uril is able to separate selectively [PtCl6]2− dianions from a mixture of [PtCl6]2−, [PdCl4]2−, and [RhCl6]3− anions. This protocol could be exploited to recover platinum from spent vehicular three-way catalytic converters and other platinum-bearing metal waste.-
dc.languageeng-
dc.relation.ispartofAngewandte Chemie - International Edition-
dc.subjectanion separation-
dc.subjectco-crystallization-
dc.subjectouter-surface interactions-
dc.subjectprecious metals-
dc.subjectresource recovery-
dc.subjectsupramolecular chemistry-
dc.titleSelective Separation of Hexachloroplatinate(IV) Dianions Based on Exo-Binding with Cucurbit[6]uril-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/anie.202104646-
dc.identifier.pmid34031957-
dc.identifier.scopuseid_2-s2.0-85108914654-
dc.identifier.volume60-
dc.identifier.issue32-
dc.identifier.spage17587-
dc.identifier.epage17594-
dc.identifier.eissn1521-3773-
dc.identifier.isiWOS:000668285400001-

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