Empirical and theoretical insights into the structural features and host-guest chemistry of M8L4 tube architectures

Wenjing Meng, Aaron B. League, Tanya K. Ronson, Jack K. Clegg, William C. Isley, David Semrouni, Laura Gagliardi, Christopher J. Cramer, Jonathan R. Nitschke

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25 Scopus citations


We demonstrate a general method for the construction of M8L 4 tubular complexes via subcomponent self-assembly, starting from CuI or AgI precursors together with suitable elongated tetraamine and 2-formylpyridine subcomponents. The tubular architectures were often observed as equilibrium mixtures of diastereomers having two different point symmetries (D2d or D2 ⇠D4) in solution. The equilibria between diastereomers were influenced through variation in ligand length, substituents, metal ion identity, counteranion, and temperature. In the presence of dicyanoaurate(I) and AuI, the D 4-symmetric hosts were able to bind linear Au(Au(CN) 2)2- (with two different configurations) as the best-fitting guest. Substitution of dicyanoargentate(I) for dicyanoaurate(I) resulted in the formation of Ag(Au(CN)2)2- as the optimal guest through transmetalation. Density functional theory was employed to elucidate the host-guest chemistries of the tubes.

Original languageEnglish (US)
Pages (from-to)3972-3980
Number of pages9
JournalJournal of the American Chemical Society
Issue number10
StatePublished - Mar 12 2014


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