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Updated: Jun 1, 2026

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
10:44

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals

Published on: April 19, 2019

ボロンが置換されたN-ヘテロサイクリックカルベンボランから派生したラジカルに関する電子パラマグネティック共振と計算研究

John C Walton1, Malika Makhlouf Brahmi, Julien Monot

  • 1School of Chemistry, EaStChem, University of St. Andrews, St. Andrews, Fife KY16 9ST, United Kingdom. jcw@st-andrews.ac.uk

Journal of the American Chemical Society
|May 31, 2011
PubMed
まとめ

第2世代のNHC-ボランは,独特の過激な化学反応を示しています. 彼らのボリル基は,より遅い二分化とアルキルグループ駆動反応を含む,非局所化されたスピンと明確な反応性を示し,オルガノボロン基の化学に関する新しい洞察を提供します.

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Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds11:44

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Radicals: Electronic Structure and Geometry01:07

Radicals: Electronic Structure and Geometry

This lesson delves into the geometry of a radical, which is influenced by the electronic structure of the molecule. The principle is similar to that of a lone pair, where the unpaired electron influences the geometry at the radical center.
Accordingly, the structure of a trivalent radical lies between the geometries of carbocations and carbanions. An sp2-hybridized carbocation is trigonal planar, while an sp3-hybridized carbanion is trigonal pyramidal. Here, the difference in geometry is...
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Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

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Radicals, the highly reactive species, gain stability by undergoing three different reactions. The first reaction involves a radical-radical coupling, in which a radical combines with another radical, forming a spin‐paired molecule. The second reaction is between a radical and a spin‐paired molecule, generating a new radical and a new spin‐paired molecule. The third reaction is radical decomposition in a unimolecular reaction, forming a new radical and a spin‐paired molecule. These three...
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