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Keywords:

  • copper;
  • host–guest systems;
  • magnetic properties;
  • metallacrown compounds;
  • supramolecular chemistry
Thumbnail image of graphical abstract

A brimming bowl: The [12]MC-6 fluoro metallacrown (MC) shown in the picture is crystallized both as a metal-free wheel and in complex with Na+ or K+ ions. The magnetic and structural properties are only slightly altered upon metal complexation. Opposite faces of the molecule form bowl-shaped cavities, in which H2O or CH2Cl2 molecules are hydrogen-bonded to the F acceptors.