Back to Search Start Over

In-Depth XANES and EXAFS Characterization of the Ag + Ion Coordination in Dimethyl Sulfoxide Solution.

Authors :
Tofoni A
Busato M
Colella A
Melchior A
D'Angelo P
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