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Keywords:

  • alkynes;
  • conjugation;
  • cyclization;
  • macrocycles;
  • oxidative coupling

As a circular path for electrons a giant macrocycle with a periphery consisting of exclusively conjugation-active units has been designed. With a diameter of 12 nm it is probably the largest synthesized, shape-persistent, and monodisperse cyclic structure to date. In addition, the front wheel of a bicycle is shown, the 16-fold symmetry of which inspired the design of the molecule. For more information on this molecule see the Communication by M. Mayor and C. Didschies on page 3176 ff.