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Updated: May 28, 2026

Biological Samples Preparation for Speciation at Cryogenic Temperature using High-Resolution X-Ray Absorption Spectroscopy
Published on: May 27, 2022
X-ray absorption near edge structure and extended X-ray absorption fine structure analysis of Fe(II) aqueous and
Wojciech Olszewski1, Krzysztof Szymański, Piotr Zaleski
1Faculty of Physics, University of Bialystok, Białystok, Poland. wojtek@alpha.uwb.edu.pl
Abstract:
X-ray absorption spectroscopy measurements were used to determine the structure of the first coordination shell of Fe(II) ions in aqueous and acetone based solutions. Extended X-ray absorption fine structure analysis coupled with ab initio X-ray absorption near edge structure calculations confirms the octahedral coordination of the iron ion in water based solution. Data collected for acetone rich solutions can be reproduced assuming coexistence of the octahedral Fe(H(2)O)(6)(2+) and tetrahedral [FeCl(4)](2-) complexes. Distortion of the tetrahedral coordination of ion was detected in some of the acetone based solutions.
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