Two Faces of the Same Coin: Coupling X‐Ray Absorption and NMR Spectroscopies to Investigate the Exchange Reaction Between Prototypical Cu Coordination Complexes
| Autor: | Osvaldo Lanzalunga, Paola D'Angelo, Matteo Busato, Danilo Oliveira de Souza, Federico Frateloreto, Flavia Cenesi, Francesco Tavani, Marika Di Berto Mancini, Stefano Di Stefano, Daniele Del Giudice |
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| Rok vydání: | 2021 |
| Předmět: |
Reaction mechanism
X-ray absorption spectroscopy XAS Chemistry Organic Chemistry General Chemistry chemical fuel multivariate analysis NMR reaction mechanism time resolved XAS and NMR XANES Catalysis Neocuproine chemistry.chemical_compound Octahedron Oxidation state Proton NMR Physical chemistry Absorption (chemistry) Terpyridine |
| Zdroj: | Chemistry – A European Journal. 28 |
| ISSN: | 1521-3765 0947-6539 |
| DOI: | 10.1002/chem.202103825 |
| Popis: | The satisfactory rationalization of complex reactive pathways in solution chemistry may greatly benefit from the combined use of advanced experimental and theoretical complementary methods of analysis. In this work, we combine X-Ray Absorption and 1 H-NMR spectroscopies with state-of-the-art Multivariate Curve Resolution and theoretical analyses to gain a comprehensive view on a prototypical reaction involving the variation of the oxidation state and local structure environment of a selected metal ion coordinated by organic ligands. Specifically, we investigate the 2-cyano-2-phenylpropanoic acid reduction of the octahedral complex established by the Cu 2+ ion with terpyridine to the tetrahedral complex formed by Cu + and neocuproine. Through our interdisciplinary approach we gain insights into the nature, concentration time evolution and structures of the key metal (XAS measurements) and organic ( 1 H NMR measurements) species under reaction. We believe our method may prove to be useful in the toolbox necessary to understand the mechanisms of reactive processes of interest in solution. |
| Databáze: | OpenAIRE |
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