UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Variability in X-ray induced effects in [Rh(COD)Cl]₂ with changing experimental parameters

Fernando, Nathalie K; Boström, Hanna LB; Murray, Claire A; Owen, Robin L; Thompson, Amber L; Dickerson, Joshua L; Garman, Elspeth F; ... Regoutz, Anna; + view all (2022) Variability in X-ray induced effects in [Rh(COD)Cl]₂ with changing experimental parameters. Physical Chemistry Chemical Physics 10.1039/d2cp03928a. (In press). Green open access

[thumbnail of d2cp03928a.pdf]
Preview
Text
d2cp03928a.pdf - Published Version

Download (2MB) | Preview

Abstract

X-ray characterisation methods have undoubtedly enabled cutting-edge advances in all aspects of materials research. Despite the enormous breadth of information that can be extracted from these techniques, the challenge of radiation-induced sample change and damage remains prevalent. This is largely due to the emergence of modern, high-intensity X-ray source technologies and the growing potential to carry out more complex, longer duration in situ or in operando studies. The tunability of synchrotron beamlines enables the routine application of photon energy-dependent experiments. This work explores the structural stability of [Rh(COD)Cl]2, a widely used catalyst and precursor in the chemical industry, across a range of beamline parameters that target X-ray energies of 8 keV, 15 keV, 18 keV and 25 keV, on a powder X-ray diffraction synchrotron beamline at room temperature. Structural changes are discussed with respect to absorbed X-ray dose at each experimental setting associated with the respective photon energy. In addition, the X-ray radiation hardness of the catalyst is discussed, by utilising the diffraction data collected at the different energies to determine a dose limit, which is often considered in protein crystallography and typically overlooked in small molecule crystallography. This work not only gives fundamental insight into how damage manifests in this organometallic catalyst, but will encourage careful consideration of experimental X-ray parameters before conducting diffraction on similar radiation-sensitive organometallic materials.

Type: Article
Title: Variability in X-ray induced effects in [Rh(COD)Cl]₂ with changing experimental parameters
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1039/d2cp03928a
Publisher version: https://doi.org/10.1039/d2cp03928a
Language: English
Additional information: This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (http://creativecommons.org/licenses/by/3.0/).
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10160161
Downloads since deposit
30Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item