4.8 Article

Lanthanide Template Synthesis of a Molecular Trefoil Knot

Journal

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 136, Issue 38, Pages 13142-13145

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ja506886p

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Funding

  1. Engineering and Physical Sciences Research Council (EPSRC)
  2. EPSRC [EP/H021620/2] Funding Source: UKRI
  3. Engineering and Physical Sciences Research Council [EP/H021620/2] Funding Source: researchfish

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We report on a complex featuring three 2,6-pyridinedicarboxamide ligands entwined around a lanthanide (Ln(3+)) ion. The ligand strands can be cyclized by ring-closing olefin metathesis to form a molecular trefoil knot in 5896 yield. Demetalation with tetraethylammonium fluoride quantitatively generates the wholly organic 81-atom-loop trefoil knot.

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