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Non-intersecting ring currents in [12]infinitene.

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Newly synthesized [12]infinitene exhibits aromaticity, defying the Möbius rule. Calculations show diatropic ring currents, indicating aromatic character in this novel molecular structure.

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Area of Science:

  • Theoretical Chemistry
  • Computational Chemistry
  • Organic Chemistry

Background:

  • Aromaticity is a key concept in organic chemistry, influencing molecular stability and reactivity.
  • The Möbius rule traditionally predicts aromaticity in twisted annulenes based on electron counts.
  • Novel molecular architectures challenge existing theoretical frameworks.

Purpose of the Study:

  • To investigate the aromaticity of the newly synthesized [12]infinitene.
  • To analyze the response of [12]infinitene to an external magnetic field.
  • To compare the electronic properties of neutral [12]infinitene with its dication.

Main Methods:

  • Computational analysis of magnetically induced current density.
  • Calculation of the induced magnetic field.
  • Examination of electron pathways and shielding effects.

Main Results:

  • [12]infinitene exhibits diatropic ring currents along its edges, indicating aromaticity.
  • The molecule is completely shielded, contradicting predictions from the Möbius rule.
  • The dication of [12]infinitene shows paratropic ring currents and a shorter through-space distance at π-π stacking.

Conclusions:

  • [12]infinitene is aromatic, demonstrating a deviation from established Möbius aromaticity rules.
  • The dication exhibits unique electronic properties due to π-π stacking.
  • This study expands the understanding of aromaticity in non-planar and novel molecular systems.