Halogen Bonding Helicates Encompassing Iodonium Cations

Alan Vanderkooy, Arvind Kumar Gupta, Tamás Földes, Sofia Lindblad, Andreas Orthaber, Imre Pápai, Máté Erdélyi

Research output: Contribution to journalArticle

5 Citations (Scopus)


The first halonium-ion-based helices were designed and synthesized using oligo-aryl/pyridylene-ethynylene backbones that fold around reactive iodonium ions. Halogen bonding interactions stabilize the iodonium ions within the helices. Remarkably, the distance between two iodonium ions within a helix is shorter than the sum of their van der Waals radii. The helical conformations were characterized by X-ray crystallography in the solid state, by NMR spectroscopy in solution and corroborated by DFT calculations. The helical complexes possess potential synthetic utility, as demonstrated by their ability to induce iodocyclization of 4-penten-1-ol.

Original languageEnglish
Pages (from-to)9012-9016
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number27
Publication statusPublished - Jul 1 2019



  • 3c–4e bonds
  • halocyclization
  • halogen bonds
  • helices
  • iodonium ions

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Cite this

Vanderkooy, A., Gupta, A. K., Földes, T., Lindblad, S., Orthaber, A., Pápai, I., & Erdélyi, M. (2019). Halogen Bonding Helicates Encompassing Iodonium Cations. Angewandte Chemie - International Edition, 58(27), 9012-9016. https://doi.org/10.1002/anie.201904817