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Updated: May 2, 2026

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
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Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Published on: July 27, 2018

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甲基基离子 (MBQ ̇−) 的负离子光电子光谱:一项联合实验和计算研究

Bo Chen1, David A Hrovat, S H M Deng

  • 1Department of Chemistry and the Center for Advanced, Scientific Computing and Modeling, University of North Texas , 1155 Union Circle, #305070, Denton, Texas 76203-5070, United States.

Journal of the American Chemical Society
|February 20, 2014
PubMed
概括

负离子光电子光谱学确定meta-benzoquinone (MBQ) 的电子亲和力为2.875 eV. 这项研究分配了MBQ.

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Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

Ideally, an unpaired electron shows a single peak in the EPR spectrum due to the transition between the two spin energy states. However, coupling interactions can occur between the spins of the unpaired electron and any neighboring spin-active nuclei. This hyperfine coupling results in hyperfine splitting, where the EPR signal is split into multiplets. The signals split into 2nI + 1 peaks, where n is the number of equivalent nuclei and I is the nuclear spin. These splitting patterns provide...
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In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox...
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