Towards the stepwise assembly of molecular Borromean Rings. A donor-acceptor ring-in-ring complex

Ross S. Forgan, Jason M. Spruell, John Carl Olsen, Charlotte L. Stern, J Fraser Stoddart

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

The assembly of molecular Borromean Rings from constitutionally independent rings in a stepwise manner depends on the preparation of robust "gring-in-ring" complexes. The π-electron rich macrocycle bis-1,5-dinaphtho[50]crown-14(1) is shown to form donor-acceptor ring-in-ring complex with the π-electron poor cyclophane cyclobis(paraquat-4,4'- biphenylene) (24+) in solution. In the crystal superstructure of [1⊂2]·4PF6, CH...O interactions between the polyether loops of 1 and the bipyridinium units of 24+ could disfavor the threading of dialkylammonium components of a third ring.

Original languageEnglish (US)
Pages (from-to)134-138
Number of pages5
JournalJournal of the Mexican Chemical Society
Volume53
Issue number3
StatePublished - Jul 1 2009

Keywords

  • Borromean Rings
  • Crystal structure
  • Donor-acceptor
  • Ring-in-ring complex
  • Supramolecular chemistry

ASJC Scopus subject areas

  • Chemistry(all)

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