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为何自旋为1、2的物种在正常条件下没有电子顺磁共振信号:在接近D值的频率下通过电子顺磁共振进行检测是否可行?

Why spin = 1, 2 species have no electron paramagnetic resonance signal under normal conditions: possible detection by electron paramagnetic resonance at frequency close to D value?

作者信息

Wu H

机构信息

Department of Chemistry, University of Wisconsin-Milwaukee 53201, USA.

出版信息

J Mol Graph. 1996 Dec;14(6):328-30, 365-8. doi: 10.1016/s0263-7855(97)00007-6.

DOI:10.1016/s0263-7855(97)00007-6
PMID:9195484
Abstract

A universal EPR simulation program has been created by the author, which is based on the following spin Hamiltonian equation: [equation: see text] where D and E are the axial and rhombic zero-field splitting parameters, respectively. The program can be used for simulation of EPR spectra with half-integer electronic spin (S = n/2, n = 3, 5, 7, 9) systems. In this article, the integer spin (S = n/2, n = 2, 4) systems are also considered. The EPR simulation results show that when D > frequency, no EPR signal can be seen from EPR simulation; when D approximately frequency, whichever X/Q/W-band is used, the EPR signal can be seen on the basis of the simulated EPR results presented.

摘要

作者创建了一个通用的电子顺磁共振(EPR)模拟程序,该程序基于以下自旋哈密顿方程:[方程:见原文],其中D和E分别是轴向和菱形零场分裂参数。该程序可用于模拟具有半整数电子自旋(S = n/2,n = 3、5、7、9)系统的EPR谱。在本文中,也考虑了整数自旋(S = n/2,n = 2、4)系统。EPR模拟结果表明,当D > 频率时,从EPR模拟中看不到EPR信号;当D近似于频率时,无论使用哪个X/Q/W波段,根据给出的模拟EPR结果都可以看到EPR信号。

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