Copper(ii) defect-cubane water oxidation electrocatalysts: from molecular tetramers to oxidic nanostructures

We report on the synthesis and spectroscopic evidence for a sequence of structural transformations of a new defect-cubane type copper complex, [Cu(4)(pyalk)(4)(OAc)(4)](ClO(4))(HNEt(3)), which acts as a pre-catalyst for water oxidation. In situ and post-catalytic studies showed that the tetrameric c...

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Detalles Bibliográficos
Autores principales: Adiyeri Saseendran, Devi Prasad, Fischer, Jörg W. A., Müller, Lea, Abbott, Daniel F., Mougel, Victor, Jeschke, Gunnar, Triana, Carlos A., Patzke, Greta R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10174076/
https://www.ncbi.nlm.nih.gov/pubmed/37089062
http://dx.doi.org/10.1039/d3cc01005h
Descripción
Sumario:We report on the synthesis and spectroscopic evidence for a sequence of structural transformations of a new defect-cubane type copper complex, [Cu(4)(pyalk)(4)(OAc)(4)](ClO(4))(HNEt(3)), which acts as a pre-catalyst for water oxidation. In situ and post-catalytic studies showed that the tetrameric complex undergoes a structural transformation into dimeric and monomeric species, induced by water molecules and carbonate anions, respectively. Further, the observed electrocatalytic water oxidation activity has been confirmed to arise from in situ-generated Cu(ii) oxidic nanostructures at the electrode interface.

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