Two Faces of the Same Coin: Coupling X-Ray Absorption and NMR Spectroscopies to Investigate the Exchange Reaction Between Prototypical Cu Coordination Complexes.

Autor: Del Giudice D; Dipartimento di Chimica, Università degli Studi di Roma 'La Sapienza', P.le A. Moro 5, I-00185, Rome, Italy., Tavani F; Dipartimento di Chimica, Università degli Studi di Roma 'La Sapienza', P.le A. Moro 5, I-00185, Rome, Italy., Di Berto Mancini M; Dipartimento di Chimica, Università degli Studi di Roma 'La Sapienza', P.le A. Moro 5, I-00185, Rome, Italy., Frateloreto F; Dipartimento di Chimica, Università degli Studi di Roma 'La Sapienza', P.le A. Moro 5, I-00185, Rome, Italy., Busato M; Dipartimento di Chimica, Università degli Studi di Roma 'La Sapienza', P.le A. Moro 5, I-00185, Rome, Italy., Oliveira De Souza D; Elettra-Sincrotrone Trieste, Strada Statale 14, km 163.5 in AREA Science Park, 34149 Basovizza, Trieste, Italy., Cenesi F; Dipartimento di Chimica, Università degli Studi di Roma 'La Sapienza', P.le A. Moro 5, I-00185, Rome, Italy., Lanzalunga O; Dipartimento di Chimica, Università degli Studi di Roma 'La Sapienza', P.le A. Moro 5, I-00185, Rome, Italy., Di Stefano S; Dipartimento di Chimica, Università degli Studi di Roma 'La Sapienza', P.le A. Moro 5, I-00185, Rome, Italy., D'Angelo P; Dipartimento di Chimica, Università degli Studi di Roma 'La Sapienza', P.le A. Moro 5, I-00185, Rome, Italy.
Jazyk: angličtina
Zdroj: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2022 Jan 19; Vol. 28 (4), pp. e202103825. Date of Electronic Publication: 2021 Dec 15.
DOI: 10.1002/chem.202103825
Abstrakt: 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.
(© 2021 Wiley-VCH GmbH.)
Databáze: MEDLINE
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