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Issue 5, 2020
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Resolving structures of transition metal complex reaction intermediates with femtosecond EXAFS

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Abstract

Femtosecond-resolved Extended X-ray Absorption Fine Structure (EXAFS) measurements of solvated transition metal complexes are successfully implemented at the X-ray Free Electron Laser LCLS. Benchmark experiments on [Fe(terpy)2]2+ in solution show a signal-to-noise ratio on the order of 500, comparable to typical 100 ps-resolution synchrotron measurements. In the few femtoseconds after photoexcitation, we observe the EXAFS fingerprints of a short-lived (∼100 fs) intermediate as well as those of a vibrationally hot long-lived (∼ns) excited state.

Graphical abstract: Resolving structures of transition metal complex reaction intermediates with femtosecond EXAFS

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Supplementary files

Article information


Submitted
20 Jun 2019
Accepted
31 Jul 2019
First published
23 Aug 2019

This article is Open Access

Phys. Chem. Chem. Phys., 2020,22, 2660-2666
Article type
Paper

Resolving structures of transition metal complex reaction intermediates with femtosecond EXAFS

A. Britz, B. Abraham, E. Biasin, T. B. van Driel, A. Gallo, A. T. Garcia-Esparza, J. Glownia, A. Loukianov, S. Nelson, M. Reinhard, D. Sokaras and R. Alonso-Mori, Phys. Chem. Chem. Phys., 2020, 22, 2660
DOI: 10.1039/C9CP03483H

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