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Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
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Carbene-Stabilized Exceptional Silicon Halides.

Shabana Khan1, Herbert W Roesky2

  • 1Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pashan, Pune, 411008, India.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|July 7, 2018
PubMed
Summary
This summary is machine-generated.

Stable carbenes, like N-heterocyclic carbenes, are used as ligands to stabilize unusual silicon halide compounds. This review covers recent advances in carbene-stabilized silicon chemistry and discusses structural variations.

Keywords:
N-heterocyclic carbenesabnormal N-heterocyclic carbenescyclic alkyl amino carbeneshalidessiliconsilylene

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Area of Science:

  • Organometallic Chemistry
  • Main Group Chemistry

Background:

  • Stable carbenes, including N-heterocyclic carbenes (NHCs), cyclic alkyl amino carbenes (CAACs), and abnormal N-heterocyclic carbenes (aNHCs), are versatile neutral ligands.
  • These ligands facilitate the stabilization of compounds featuring main group elements in unusual oxidation states.

Purpose of the Study:

  • To provide an overview of recent developments in the chemistry of carbene-stabilized silicon halides.
  • To discuss the structural diversity arising from different carbene ligands.

Main Methods:

  • Literature review of carbene-stabilized silicon halide compounds.
  • Analysis of structure-property relationships based on carbene electronic properties (HOMO-LUMO gaps).

Main Results:

  • Carbenes effectively stabilize silicon halides in low oxidation states.
  • Structural diversity is observed, influenced by the electronic characteristics of the employed carbenes.
  • Specific examples of carbene-stabilized silicon halide structures are presented.

Conclusions:

  • Carbene stabilization offers a powerful strategy for accessing novel silicon compounds.
  • The electronic tuning of carbenes allows for control over the structure and properties of silicon halide complexes.