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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. B [J Phys Chem B] 2024 Aug 22; Vol. 128 (33), pp. 8065-8073. Date of Electronic Publication: 2024 Aug 12. - 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 <superscript>+</superscript> 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 <superscript>+</superscript> 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) <subscript>4</subscript> ] <superscript>+</superscript> complex is formed when silver triflate is dissolved in DMSO solution.
Details
- Language :
- English
- ISSN :
- 1520-5207
- Volume :
- 128
- Issue :
- 33
- Database :
- MEDLINE
- Journal :
- The journal of physical chemistry. B
- Publication Type :
- Academic Journal
- Accession number :
- 39134514
- Full Text :
- https://doi.org/10.1021/acs.jpcb.4c04001