Pair distribution function and 71 Ga NMR study of aqueous Ga 3+ complexes.
| Autor: | Nielsen IG; Center for Materials Crystallography, Department of Chemistry, Interdisciplinary Nanoscience Center (iNANO), Aarhus University 8000 Aarhus C Denmark bo@chem.au.dk., Sommer S; Center for Materials Crystallography, Department of Chemistry, Interdisciplinary Nanoscience Center (iNANO), Aarhus University 8000 Aarhus C Denmark bo@chem.au.dk., Dippel AC; Deutsches Elektronen-Synchrotron DESY D-22607 Hamburg Germany., Skibsted J; Department of Chemistry, iNANO, Aarhus University 8000 Aarhus C Denmark., Iversen BB; Center for Materials Crystallography, Department of Chemistry, Interdisciplinary Nanoscience Center (iNANO), Aarhus University 8000 Aarhus C Denmark bo@chem.au.dk. |
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| Jazyk: | angličtina |
| Zdroj: | Chemical science [Chem Sci] 2021 Oct 14; Vol. 12 (43), pp. 14420-14431. Date of Electronic Publication: 2021 Oct 14 (Print Publication: 2021). |
| DOI: | 10.1039/d1sc05190c |
| Abstrakt: | The atomic structures, and thereby the coordination chemistry, of metal ions in aqueous solution represent a cornerstone of chemistry, since they provide first steps in rationalizing generally observed chemical information. However, accurate structural information about metal ion solution species is often surprisingly scarce. Here, the atomic structures of Ga 3+ ion complexes were determined directly in aqueous solutions across a wide range of pH, counter anions and concentrations by X-ray pair distribution function analysis and 71 Ga NMR. At low pH (<2) octahedrally coordinated gallium dominates as either monomers with a high degree of solvent ordering or as Ga-dimers. At slightly higher pH (pH ≈ 2-3) a polyoxogallate structure is identified as either Ga Competing Interests: There are no conflicts to declare. (This journal is © The Royal Society of Chemistry.) |
| Databáze: | MEDLINE |
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