Energy-dispersive X-ray absorption spectroscopy was applied, aimed at solving the problem of the structure and stability of a copper(II) lactate complex in alkaline solution, used as a precursor for the electrodeposition of Cu2O. The application of multiple scattering calculations to the simulation of the X-ray absorption near-edge structure part of the spectra allowed an accurate resolution of the structure: the copper(II) cation is surrounded by four lactate ions in a distorted tetrahedral environment, with the lactate anions acting as monodentate ligands. This results in an atomic arrangement where copper is surrounded by four oxygen atoms located at quite a short distance (ca. 1.87 Å) and four oxygen atoms located quite far apart (ca. 3.1-3.2 Å). The complex was finally found to be stable in a wide range of applied potentials.

Structure and Stability of a Copper(II) Lactate Complex in Alkaline Solution : a Case Study by Energy-Dispersive X-ray Absorption Spectroscopy / E. Achilli, A. Vertova, A. Visibile, C. Locatelli, A. Minguzzi, S. Rondinini, P. Ghigna. - In: INORGANIC CHEMISTRY. - ISSN 0020-1669. - 56:12(2017), pp. 6982-6989. [10.1021/acs.inorgchem.7b00553]

Structure and Stability of a Copper(II) Lactate Complex in Alkaline Solution : a Case Study by Energy-Dispersive X-ray Absorption Spectroscopy

A. Vertova;A. Visibile;C. Locatelli;A. Minguzzi;S. Rondinini;
2017

Abstract

Energy-dispersive X-ray absorption spectroscopy was applied, aimed at solving the problem of the structure and stability of a copper(II) lactate complex in alkaline solution, used as a precursor for the electrodeposition of Cu2O. The application of multiple scattering calculations to the simulation of the X-ray absorption near-edge structure part of the spectra allowed an accurate resolution of the structure: the copper(II) cation is surrounded by four lactate ions in a distorted tetrahedral environment, with the lactate anions acting as monodentate ligands. This results in an atomic arrangement where copper is surrounded by four oxygen atoms located at quite a short distance (ca. 1.87 Å) and four oxygen atoms located quite far apart (ca. 3.1-3.2 Å). The complex was finally found to be stable in a wide range of applied potentials.
Physical and Theoretical Chemistry; Inorganic Chemistry
Settore CHIM/02 - Chimica Fisica
INORGANIC CHEMISTRY
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/531511
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