Journal Article

PUBDB-2025-03790

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Speciation of Chlorido Complexes of Rhodium(III) in Ethylene Glycol

Cool, V. (Corresponding author)Extern* ; Steurs, G. ; Arcon, I.Extern* ; Riano, S.Extern* ; Van Gerven, T. ; Binnemans, K. (Corresponding author)

2025
American Chemical Society Washington, DC

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Please use a persistent id in citations: doi:10.1021/acs.inorgchem.5c02591  doi:10.3204/PUBDB-2025-03790

Abstract: The speciation of rhodium(III) chlorido complexeswas investigated in ethylene glycol, in the presence and absence oflithium chloride, by rhodium-103 NMR and EXAFS spectroscopy.All major rhodium(III) complexes were identified based on theirspecies-specific isotopologue and isotopomer patterns. EXAFSanalysis confirmed the results deduced from the rhodium-103NMR spectra. The strikingly different shifting behavior observedwith increasing lithium chloride concentration was linked to theestablished behavior of rhodium(III) in NMR spectroscopy.Density functional theory (DFT) calculations were performed toelucidate the underlying factors of the observed trends, highlightingtheir potential as an additional tool for the speciation ofrhodium(III) complexes, even for NMR spectra with a lowsignal-to-noise ratio. These results give a deeper insight into the speciation of rhodium(III) in a nonaqueous environment andcontribute to the fundamental basis needed to understand the extraction behavior of rhodium(III) in nonaqueous solvent extraction.

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Contributing Institute(s):

1. FS DOOR-User (FS DOOR-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. FS-Proposal: I-20230851 EC (I-20230851-EC) (I-20230851-EC)

Experiment(s):

1. PETRA Beamline P65 (PETRA III)

Appears in the scientific report 2025

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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