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Isolable Phospha- and Arsaalumenes.

Malte Fischer1, Samuel Nees2,3, Thomas Kupfer2,3

  • 1Leibniz Institut für Katalyse e.V. (LIKAT), A.-Einstein-Str.3a, 18059 Rostock, Germany.

Journal of the American Chemical Society
|March 10, 2021
PubMed
Summary
This summary is machine-generated.

Researchers synthesized novel pnictaalumenes and three-membered aromatic ring systems using aluminum complexes and pnicta-Wittig reagents. These compounds feature unique polarized bonds and intramolecular stabilization, advancing organometallic chemistry.

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Area of Science:

  • Organometallic Chemistry
  • Main Group Chemistry
  • Synthetic Chemistry

Background:

  • Aluminum complexes like (AlCp*)4 serve as precursors to reactive monomeric aluminum species.
  • Pnicta-Wittig reagents, such as DipTerPnPMe3 (Pn = P, As), are valuable tools for forming element-element multiple bonds.

Purpose of the Study:

  • To investigate the reactivity of monomeric aluminum species with pnicta-Wittig reagents.
  • To synthesize and characterize novel aluminum-pnictogen compounds.
  • To explore the structural features and bonding in the resulting products.

Main Methods:

  • Reaction of (AlCp*)4 with DipTerPnPMe3 at 80 °C.
  • Reaction of MesTerPPMe3 with 2 equiv of :AlCp3t or :AlCp*.
  • Characterization of products using spectroscopic and structural methods (implied).

Main Results:

  • Clean formation of pnictaalumenes DipTerPnAlCp* with polarized Pn-Al double bonds.
  • Intramolecular stabilization observed in pnictaalumenes via Al-aryl interactions.
  • Synthesis of three-membered 2π-aromatic ring systems MesTerP(AlCp)2 (x = 3t, *).

Conclusions:

  • The study demonstrates a versatile synthetic route to novel organoaluminum-pnictogen compounds.
  • The results highlight the formation of polarized Pn-Al double bonds and unique aromatic ring systems.
  • This work expands the scope of pnicta-Wittig chemistry and organoaluminum synthesis.