Progress and prospects in nonlinear extreme-ultraviolet and X-ray optics and spectroscopy

M Chergui, M Beye, S Mukamel, C Svetina… - Nature Reviews …, 2023 - nature.com
Free-electron lasers and high-harmonic-generation table-top systems are new sources of
extreme-ultraviolet to hard X-ray photons, providing ultrashort pulses that are intense …

Using X-ray free-electron lasers for spectroscopy of molecular catalysts and metalloenzymes

U Bergmann, J Kern, RW Schoenlein, P Wernet… - Nature Reviews …, 2021 - nature.com
The metal centres in metalloenzymes and molecular catalysts are responsible for the
rearrangement of atoms and electrons during complex chemical reactions, and they enable …

Elucidating the mechanism of excited-state bond homolysis in nickel–bipyridine photoredox catalysts

DA Cagan, D Bím, B Silva… - Journal of the …, 2022 - ACS Publications
Ni 2, 2′–bipyridine (bpy) complexes are commonly employed photoredox catalysts of bond-
forming reactions in organic chemistry. However, the mechanisms by which they operate are …

The spin-forbidden transition in iron (IV)-oxo catalysts relevant to two-state reactivity

DB Rice, D Wong, T Weyhermüller, F Neese… - Science …, 2024 - science.org
Quintet oxoiron (IV) intermediates are often invoked in nonheme iron enzymes capable of
performing selective oxidation, while most well-characterized synthetic model oxoiron (IV) …

Challenges and opportunities for applications of advanced X-ray spectroscopy in catalysis research

GE Cutsail III, S DeBeer - ACS Catalysis, 2022 - ACS Publications
X-ray spectroscopy has had a significant and continually growing impact on catalysis
research for nearly 50 years. In particular, the ability to obtain element selective electronic …

Reduction of electron repulsion in highly covalent Fe-amido complexes counteracts the impact of a weak ligand field on excited-state ordering

CB Larsen, JD Braun, IB Lozada… - Journal of the …, 2021 - ACS Publications
The ability to access panchromatic absorption and long-lived charge-transfer (CT) excited
states is critical to the pursuit of abundant-metal molecular photosensitizers. Fe (II) …

A new era of LMCT: leveraging ligand-to-metal charge transfer excited states for photochemical reactions

AM May, JL Dempsey - Chemical Science, 2024 - pubs.rsc.org
Ligand-to-metal charge transfer (LMCT) excited states are capable of undergoing a wide
array of photochemical reactions, yet receive minimal attention compared to other charge …

Elucidation of structure–activity correlations in a nickel manganese oxide oxygen evolution reaction catalyst by operando Ni L-edge X-ray absorption spectroscopy …

M Al Samarai, AW Hahn… - … Applied Materials & …, 2019 - ACS Publications
Herein, we report the synthesis and electrochemical oxygen evolution experiments for a
graphene-supported Ni3MnO4 catalyst. The changes that occur at the Ni active sites during …

Computational approaches for XANES, VtC-XES, and RIXS using linear-response time-dependent density functional theory based methods

DR Nascimento, N Govind - Physical Chemistry Chemical Physics, 2022 - pubs.rsc.org
The emergence of state-of-the-art X-ray light sources has paved the way for novel
spectroscopies that take advantage of their atomic specificity to shed light on fundamental …

Theoretical X‐ray spectroscopy of transition metal compounds

SI Bokarev, O Kühn - Wiley Interdisciplinary Reviews …, 2020 - Wiley Online Library
X‐ray spectroscopy is one of the most powerful tools to access structure and properties of
matter in different states of aggregation as it allows to trace atomic and molecular energy …