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In-Depth XANES and EXAFS Characterization of the Ag+Ion Coordination in Dimethyl Sulfoxide Solution
- Source :
- The Journal of Physical Chemistry - Part B; August 2024, Vol. 128 Issue: 33 p8065-8073, 9p
- Publication Year :
- 2024
-
Abstract
- X-ray absorption near-edge structure (XANES) spectroscopy has been used, in conjunction with extended X-ray absorption fine structure (EXAFS), to determine the coordination structure of the Ag+ion in a dimethyl sulfoxide (DMSO) solution. From the EXAFS data analysis, the Ag–O first shell distance in DMSO was found to be 2.31(3) Å, with 4.1(5) oxygen atoms surrounding the Ag+ion, in fair agreement with previous results. This technique did not allow us to determine the geometry of the 4-fold coordination complex and a quantitative analysis of the XANES region was carried out to shed light on this issue. The XANES data analysis confirmed the presence of a four-coordinated complex, unambiguously showing that a regular tetrahedral [Ag(DMSO)4]+complex is formed when silver triflate is dissolved in DMSO solution.
Details
- Language :
- English
- ISSN :
- 15206106 and 15205207
- Volume :
- 128
- Issue :
- 33
- Database :
- Supplemental Index
- Journal :
- The Journal of Physical Chemistry - Part B
- Publication Type :
- Periodical
- Accession number :
- ejs67136741
- Full Text :
- https://doi.org/10.1021/acs.jpcb.4c04001