Highly resolved electron paramagnetic resonance spectrum of copper( II ) ion pairs in CuCe oxide

A copper–cerium oxide sample prepared with an atomic ratio, Cu : Ce, of 0.01 has been studied by electron paramagnetic resonance (EPR) spectroscopy. A well resolved spectrum of copper(II) ion pairs has been evidenced and the hyperfine structure of the perpendicular components clearly appears. The hi...

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Bibliographic Details
Published in:Journal of the Chemical Society. Faraday transactions 1992, Vol.88 (4), p.615-620
Main Authors: Aboukaïs, Antoine, Bennani, Abdelrhani, Aïssi, Cossi Faustin, Wrobel, Geneviève, Guelton, Michel, Vedrine, Jacques C.
Format: Article
Language:English
Subjects:
Catalysis
Chemical Sciences
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Summary:A copper–cerium oxide sample prepared with an atomic ratio, Cu : Ce, of 0.01 has been studied by electron paramagnetic resonance (EPR) spectroscopy. A well resolved spectrum of copper(II) ion pairs has been evidenced and the hyperfine structure of the perpendicular components clearly appears. The high resolution can be explained by the presence of two nearly equivalent Cu2+ ions separated by an oxygen ion. A correlation in EPR parameters has been found between the signal corresponding to a single Cu2+ ion, a precursor of the dimer, and the copper(II) ion pair spectrum.
ISSN:0956-5000
1364-5455
DOI:10.1039/FT9928800615