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• W2897856971 endingPage "13523" @default.
• W2897856971 startingPage "13513" @default.
• W2897856971 abstract "As an emerging type of actinide hybrid material, uranyl–rotaxane coordination polymers (URCPs) with new coordination patterns and topological structures are still desired. In this work, we propose a new strategy to construct URCPs by promoting the simultaneous coordination of both the wheel and axle moieties in pseudorotaxane linkers with metal nodes. Starting from a series of cucurbit[6]uril (CB[6])-based pseudorotaxane ligands, CnBPCA@CB[6] [CnBPCA = 1,1-(α,ω-diyl)bis[4-(ethoxycarbonyl)pyridin-1-ium] bromides, where n = 5–8] with slightly deformed CB[6], four new URCPs (URCP1, URCP3, URCP4, and URCP5) with interwoven network structures, as well as another noninterwoven polymer(URCP2), have been successfully prepared. According to single-crystal structure analysis, we attribute the interwoven structures of the URCPs to the distortion of CB[6] in pseudorotaxane ligands with shorter or longer spacers (C5, C7, and C8). This indicates that the deformation could effectively diminish the steric hindrance around the portals, thus endowing the “inert” CB[6] host with coordination ability like the string molecule. Besides, the participation of water molecules and sulfate anions in the uranyl coordination sphere is also found to have a great influence on the final structures of the obtained URCPs. The successful preparation of interwoven URCPs in this work gives some new insights into the metal coordination of supramolecular entities and could facilitate other new applications of CB[6]-based pseudorotaxane ligands. Most importantly, the strategy proposed in this work provides some hints in the controllable design of metal–organic rotaxane frameworks with unique topologies." @default.
• W2897856971 created "2018-10-26" @default.
• W2897856971 creator A5016909151 @default.
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• W2897856971 date "2018-10-15" @default.
• W2897856971 modified "2023-10-15" @default.
• W2897856971 title "Releasing Metal-Coordination Capacity of Cucurbit[6]uril Macrocycle in Pseudorotaxane Ligands for the Construction of Interwoven Uranyl–Rotaxane Coordination Polymers" @default.
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• W2897856971 doi "https://doi.org/10.1021/acs.inorgchem.8b02126" @default.
• W2897856971 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30351082" @default.
• W2897856971 hasPublicationYear "2018" @default.
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