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σ-Arsolido complexes.

Ryan M Kirk1, Anthony F HIll1

  • 1Research School of Chemistry, Australian National University, Canberra, ACT, Australia. a.hill@anu.edu.au.

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|July 1, 2024
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Summary
This summary is machine-generated.

This study introduces σ-stannyl complexes as effective reagents for synthesizing σ-arsolyl metal complexes through transmetallation. These reactions enable the controlled installation of arsolyl ligands onto various metal centers, expanding synthetic possibilities in organometallic chemistry.

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Area of Science:

  • Organometallic Chemistry
  • Synthetic Chemistry
  • Coordination Chemistry

Background:

  • σ-stannyl complexes are valuable synthetic intermediates.
  • Transmetallation reactions are key for ligand installation.
  • Arsolyl ligands offer unique electronic and steric properties.

Purpose of the Study:

  • To explore the utility of σ-stannyl complexes for installing σ-arsolyl ligands.
  • To investigate the reactivity of various metal-stannyl complexes with chloroarsoles.
  • To characterize the resulting organometallic complexes and understand reaction mechanisms.

Main Methods:

  • Synthesis of σ-stannyl metal complexes.
  • Transmetallation reactions with chloroarsoles.
  • Spectroscopic characterization (NMR, IR) and elemental analysis.
  • Computational analysis of potential coordination modes.

Main Results:

  • Successful installation of σ-arsolyl ligands onto molybdenum, tungsten, and iron centers.
  • Observation of side reactions including dimerization and desilylation under specific conditions.
  • Demonstration of the versatility of the method with different substituents on the arsole ring.
  • Computational evidence supporting the viability of a trigonal 'XL' arsolenium coordination mode.

Conclusions:

  • σ-stannyl complexes are mild and effective reagents for synthesizing σ-arsolyl metal complexes.
  • Reaction outcomes are influenced by the metal, substituents, and reaction conditions.
  • The developed methodology provides access to novel organometallic compounds with potential applications.