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Analysis of Time-Resolved Energy Dispersive X-ray Absorption Spectroscopy Data for the Study of Chemical Reaction Intermediate States

DOI: 10.1021/ac050954d DOI Help

Authors: D. T. Bowron (ISIS Facility, Rutherford Appleton Laboratory) , S. Diaz-moreno (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Analytical Chemistry , VOL 77 (19) , PAGES 6445

State: Published (Approved)
Published: August 2005

Abstract: Energy-dispersive X-ray absorption spectroscopy is an increasingly powerful tool for the investigation of kinetic processes in chemical systems as an element-specific local structure and electronic-state probe. Advances in synchrotron radiation sources and detector technology are pushing the time resolution of the method to ever shorter periods, currently milliseconds to microseconds, while also providing a concomitant improvement in data quality that now makes feasible the identification of structural and electronic motifs characteristic of intermediate states in chemical processes. To maximize the value of the newly available high-quality time-resolved data, techniques for consistent data normalization and structural component analysis have been developed and here are illustrated in a model study of the electron-transfer reaction between [IrCl6]2- with [Co(CN)5]3-.

Journal Keywords: Energy Dispersive EXAFS; Time Resolved; Chemical Reactions; Reaction Intermediates

Subject Areas: Chemistry, Technique Development

Facility: ESRF