Paramagnetic species in catalysis research: A unified approach towards (the role of EPR in) heterogeneous, homogeneous and enzyme catalysis

被引：0

作者：

Bracci M. ^{[1
]}

Bruzzese P.C. ^{[2
]}

Famulari A. ^{[1
]}

Fioco D. ^{[3
]}

Guidetti A. ^{[4
]}

Liao Y.-K. ^{[5
]}

Podvorica L. ^{[5
]}

Rezayi S.F. ^{[3
]}

Serra I. ^{[4
]}

Thangavel K. ^{[2
]}

Murphy D.M. ^{[3
]}

机构：

[1] Department of Condensed Matter Physics, Faculty of Sciences, University of Zaragoza, Calle Pedro Cerbuna 12, Zaragoza

[2] Felix Bloch Institute for Solid State Physics, Universität Leipzig, Linnéstr. 5, Leipzig

[3] School of Chemistry, Main Building, Cardiff University, Cardiff

[4] BIMEF Laboratory, Department of Chemistry, University of Antwerp

[5] Department of Chemistry, University of Turin, Via Giuria 9, Torino

来源：

Murphy, Damien M. (MurphyDM@cardiff.ac.uk) | 1600年 / Royal Society of Chemistry卷 / 27期

基金：

欧盟地平线“2020”;

关键词：

Single crystals - Catalysis - Electron spin resonance spectroscopy - Metal complexes - Enzymes - Metal ions - Paramagnetism - Electronic structure - Transition metal compounds - Transition metals;

D O I：

10.1039/9781839162534-00001

中图分类号：

学科分类号：

摘要：

Paramagnetic (open-shell) systems, including transition metal ions, radical intermediates and defect centres, are often involved in catalytic transformations. Despite the prevalence of such species in catalysis, there are relatively few studies devoted to their characterisation, compared to their diamagnetic counterparts. Electron Paramagnetic Resonance (EPR) is an ideal technique perfectly suited to characterise such reaction centres, providing valuable insights into the molecular and supramolecular structure, the electronic structure, the dynamics and even the concentration of the paramagnetic systems under investigation. Furthermore, as EPR is such a versatile technique, samples can be measured as liquids, solids (frozen solutions and powders) and single crystals, making it ideal for studies in heterogeneous, homogeneous and enzyme catalysis. Coupled with the higher resolving power of the pulsed, higher frequency and hyperfine techniques, unsurpassed detail on the structure of these catalytic centres can be obtained. In this Chapter, we provide an overview to demonstrate how advanced EPR methods can be successfully exploited in the study of open-shell paramagnetic reaction centres in heterogeneous, homogeneous and enzymatic catalysts, including heme-based enzymes for use in biocatalysts, polymerisation based catalysts, supported microporous heterogeneous catalytic centres to homogeneous metal complexes for small molecule actions. © The Royal Society of Chemistry 2021.

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页码：1 / 46

页数：45

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