Signatures of technetium oxidation states: a new approach

被引：12

作者：

Bauters, Stephen ^{[1
,2
]}

Scheinost, Andreas C. ^{[1
,2
]}

Schmeide, Katja ^{[2
]}

Weiss, Stephan ^{[2
]}

Dardenne, Kathy ^{[3
]}

Rothe, Jorg ^{[3
]}

Mayordomo, Natalia ^{[2
]}

Steudtner, Robin ^{[2
]}

Stumpf, Thorsten ^{[2
]}

Abram, Ulrich ^{[4
]}

Butorin, Sergei M. ^{[5
]}

Kvashnina, Kristina O. ^{[1
,2
]}

机构：

[1] ESRF European Synchrotron, Rossendorf Beamline, CS40220, F-38043 Grenoble 9, France

[2] Helmholtz Zentrum Dresden Rossendorf HZDR, Inst Resource Ecol, Bautzner Landstr 400, D-01328 Dresden, Germany

[3] Karlsruhe Inst Technol KIT, Inst Nucl Waste Disposal INE, POB 3640, D-76021 Karlsruhe, Germany

[4] Free Univ Berlin, Inst Chem & Biochem, Fabeckstr 34-36, D-14195 Berlin, Germany

[5] Uppsala Univ, Dept Phys & Astron, Mol & Condensed Matter Phys, POB 516, Uppsala, Sweden

来源：

CHEMICAL COMMUNICATIONS | 2020年 / 56卷 / 67期

基金：

瑞典研究理事会; 欧洲研究理事会;

关键词：

ABSORPTION-SPECTRA; COMPLEXES; CHEMISTRY;

D O I：

10.1039/d0cc03905e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A general strategy for the determination of Tc oxidation state by new approach involving X-ray absorption near edge spectroscopy (XANES) at the Tc L-3 edge is shown. A comprehensive series of Tc-99 compounds, ranging from oxidation states I to VII, was measured and subsequently simulated within the framework of crystal-field multiplet theory. The observable trends in the absorption edge energy shift in combination with the spectral shape allow for a deeper understanding of complicated Tc coordination chemistry. This approach can be extended to numerous studies of Tc systems as this method is one of the most sensitive methods for accurate Tc oxidation state and ligand characterization.

引用

页码：9608 / 9611

页数：4

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