Möbius Aromatic Hydrocarbons: Challenges for Theory and Synthesis



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Twisting a belt-shaped loop of p orbitals results in a Möbius structure (see scheme). Only recently have synthetic chemists realized this idea first proposed by Heilbronner 40 years ago. The interaction of theory and synthesis, which has distinguished the concept of aromaticity since its inception, has opened a new chapter in this field.