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An isolable β-diketiminato chlorosilylene.

Yun Xiong1, Shenglai Yao, Arseni Kostenko

  • 1Technische Universität Berlin, Department of Chemistry: Metalorganics and Inorganic Materials, Sekr. C2, Strasse des 17. Juni 135, D-10623 Berlin, Germany. matthias.driess@tu-berlin.de.

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The first chlorosilylene stabilized by a beta-diketiminate ligand was synthesized. This novel compound was successfully isolated using dehydrochlorination with an N-heterocyclic carbene.

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Area of Science:

  • Organometallic Chemistry
  • Silicon Chemistry
  • Ligand Development

Background:

  • Diketiminate ligands are versatile in stabilizing reactive species.
  • Chlorosilylenes are highly reactive silicon intermediates.
  • Previous syntheses of silylenes often require specialized conditions.

Purpose of the Study:

  • To synthesize and characterize the first beta-diketiminate ligated chlorosilylene.
  • To explore the utility of N-heterocyclic carbenes in silylene synthesis.
  • To establish a new route for stable silylene preparation.

Main Methods:

  • Dehydrochlorination reaction of a beta-diketiminato dichlorohydrosilane.
  • Use of an N-heterocyclic carbene as a base.
  • Isolation and characterization of the resulting chlorosilylene.

Main Results:

  • Successful synthesis and isolation of a novel beta-diketiminate ligated chlorosilylene.
  • Characterization confirmed the structure and stability of the new compound.
  • The N-heterocyclic carbene effectively mediated the dehydrochlorination process.

Conclusions:

  • Beta-diketiminate ligands can effectively stabilize chlorosilylenes.
  • N-heterocyclic carbenes provide a viable method for synthesizing silylenes.
  • This work opens new avenues for the study and application of low-coordinate silicon species.