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Broadband Tunable Electron Paramagnetic Resonance Spectroscopy of Dilute Metal Complexes

[Image: see text] Analysis of the electron paramagnetic resonance (EPR) of transition ion complexes requires data taken at different microwave frequencies because the spin Hamiltonian contains operators linear in the frequency as well as operators independent of the frequency. In practice, data coll...

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Autor principal: Hagen, Wilfred R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2019
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6750836/
https://www.ncbi.nlm.nih.gov/pubmed/31319028
http://dx.doi.org/10.1021/acs.jpca.9b03574
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author Hagen, Wilfred R.
author_facet Hagen, Wilfred R.
author_sort Hagen, Wilfred R.
collection PubMed
description [Image: see text] Analysis of the electron paramagnetic resonance (EPR) of transition ion complexes requires data taken at different microwave frequencies because the spin Hamiltonian contains operators linear in the frequency as well as operators independent of the frequency. In practice, data collection is hampered by the fact that conventional EPR spectrometers have always been designed to operate at a single frequency. Here, a broadband instrument is described and tested that operates from 0.5 to 12 GHz and whose sensitivity approaches that of single-frequency spectrometers. Multifrequency EPR from triclinic substitutional (0.5%) Cu(II) in ZnSO(4) is globally analyzed to illustrate a novel approach to reliable determination of the molecular electronic structure of transition ion complexes from field-frequency 2D data sets.
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spelling pubmed-67508362019-09-19 Broadband Tunable Electron Paramagnetic Resonance Spectroscopy of Dilute Metal Complexes Hagen, Wilfred R. J Phys Chem A [Image: see text] Analysis of the electron paramagnetic resonance (EPR) of transition ion complexes requires data taken at different microwave frequencies because the spin Hamiltonian contains operators linear in the frequency as well as operators independent of the frequency. In practice, data collection is hampered by the fact that conventional EPR spectrometers have always been designed to operate at a single frequency. Here, a broadband instrument is described and tested that operates from 0.5 to 12 GHz and whose sensitivity approaches that of single-frequency spectrometers. Multifrequency EPR from triclinic substitutional (0.5%) Cu(II) in ZnSO(4) is globally analyzed to illustrate a novel approach to reliable determination of the molecular electronic structure of transition ion complexes from field-frequency 2D data sets. American Chemical Society 2019-07-18 2019-08-15 /pmc/articles/PMC6750836/ /pubmed/31319028 http://dx.doi.org/10.1021/acs.jpca.9b03574 Text en Copyright © 2019 American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.
spellingShingle Hagen, Wilfred R.
Broadband Tunable Electron Paramagnetic Resonance Spectroscopy of Dilute Metal Complexes
title Broadband Tunable Electron Paramagnetic Resonance Spectroscopy of Dilute Metal Complexes
title_full Broadband Tunable Electron Paramagnetic Resonance Spectroscopy of Dilute Metal Complexes
title_fullStr Broadband Tunable Electron Paramagnetic Resonance Spectroscopy of Dilute Metal Complexes
title_full_unstemmed Broadband Tunable Electron Paramagnetic Resonance Spectroscopy of Dilute Metal Complexes
title_short Broadband Tunable Electron Paramagnetic Resonance Spectroscopy of Dilute Metal Complexes
title_sort broadband tunable electron paramagnetic resonance spectroscopy of dilute metal complexes
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6750836/
https://www.ncbi.nlm.nih.gov/pubmed/31319028
http://dx.doi.org/10.1021/acs.jpca.9b03574
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