Designed synthesis of metal cluster-centered pseudo-rotaxane supramolecular architectures |
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Authors: | Gao Cai-Yan Zhao Liang Wang Mei-Xiang |
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Institution: | The Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China. |
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Abstract: | The designed synthesis and structural characterization of two metal cluster-centered metallosupramolecular architectures are reported. In complex (CF(3)SO(3))Ag(4)((t)BuC≡C)(Py8)](CF(3)SO(3))(2) (1) and (CF(3)SO(3))Ag(4){C≡C-(m-C(6)H(4))-C≡C-(m-C(6)H(4))-C≡C-(m-C(6)H(4))-C≡C}Ag(4)(CF(3)SO(3))(Py8)(2)](CF(3)SO(3))(4) (2), organic acetylide ligands are utilized to induce the formation of polynuclear silver aggregates, which are encapsulated into the central cavity of the neutral macrocyclic compound azacalix8]pyridine (Py8). The tetrasilver cluster centered 2]- and 3]-pseudo-rotaxane structures are obtained and fully characterized by X-ray crystallography, ESI mass spectrometry, and (1)H NMR spectroscopy. |
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