Issue 5, 2020

Resolving structures of transition metal complex reaction intermediates with femtosecond EXAFS

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

Supplementary files

Article information

Article type
Paper
Submitted
20 Jun 2019
Accepted
31 Jul 2019
First published
23 Aug 2019
This article is Open Access
Creative Commons BY-NC license

Phys. Chem. Chem. Phys., 2020,22, 2660-2666

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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