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Metallaaromatic biaryl atropisomers.

M Talavera1, A Peña-Gallego, J L Alonso-Gómez

  • 1Departamento de Química Inorgánica, Universidad de Vigo, Campus Universitario, E-36310 Vigo, Spain. bgs@uvigo.es.

Chemical Communications (Cambridge, England)
|September 14, 2018
PubMed
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Researchers synthesized novel metallaaromatic biaryl atropisomers using iridium complexes. These compounds exhibit aromaticity and atropisomerism comparable to established binaphthalene systems.

Area of Science:

  • Organometallic Chemistry
  • Supramolecular Chemistry
  • Atropisomerism

Background:

  • Biaryl atropisomers are crucial in asymmetric catalysis and materials science.
  • Existing atropisomers often rely on carbon-based scaffolds, limiting structural diversity.
  • Metallaaromatic systems offer unique electronic and steric properties.

Purpose of the Study:

  • To synthesize and characterize novel metallaaromatic biaryl atropisomers.
  • To investigate the aromaticity and atropisomeric behavior of these new complexes.
  • To compare their properties with traditional organic biaryl systems.

Main Methods:

  • Synthesis of iridium-binaphthyl and iridium-phenanthryl complexes.
  • Experimental characterization techniques (e.g., NMR, X-ray crystallography).

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  • Computational studies (e.g., DFT) to analyze electronic structure and bonding.

    • Main Results:

    • Successful synthesis of stable irida-binaphthyl and irida-phenanthryl complexes.
    • These represent the first examples of metallaaromatic biaryl atropisomers.
    • Experimental and theoretical data confirm aromaticity and atropisomerism comparable to 1,1'-binaphthalene.

    Conclusions:

    • Metallaaromatic systems can effectively mimic the atropisomeric and aromatic properties of organic biaryls.
    • This work expands the scope of atropisomeric compounds into organometallic chemistry.
    • These novel complexes hold potential for applications in catalysis and molecular recognition.