Sodium-coupled electron transfer reactivity of metal–organic frameworks containing titanium clusters: the importance of cations in redox chemistry

Stoichiometric reduction reactions of two metal–organic frameworks (MOFs) by the solution reagents [Image: see text] (M = Cr, Co) are described. The two MOFs contain clusters with Ti(8)O(8) rings: Ti(8)O(8)(OH)(4)(bdc)(6); bdc = terephthalate (MIL-125) and Ti(8)O(8)(OH)(4)(bdc-NH(2))(6); bdc-NH(2) =...

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Detalles Bibliográficos
Autores principales: Saouma, Caroline T., Tsou, Chih-Chin, Richard, Sarah, Ameloot, Rob, Vermoortele, Frederik, Smolders, Simon, Bueken, Bart, DiPasquale, Antonio G., Kaminsky, Werner, Valdez, Carolyn N., De Vos, Dirk E., Mayer, James M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2018
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6354900/
https://www.ncbi.nlm.nih.gov/pubmed/30809347
http://dx.doi.org/10.1039/c8sc04138e
Descripción
Sumario:Stoichiometric reduction reactions of two metal–organic frameworks (MOFs) by the solution reagents [Image: see text] (M = Cr, Co) are described. The two MOFs contain clusters with Ti(8)O(8) rings: Ti(8)O(8)(OH)(4)(bdc)(6); bdc = terephthalate (MIL-125) and Ti(8)O(8)(OH)(4)(bdc-NH(2))(6); bdc-NH(2) = 2-aminoterephthalate (NH(2)-MIL-125). The stoichiometry of the redox reactions was probed using solution NMR methods. The extent of reduction is greatly enhanced by the presence of Na(+), which is incorporated into the bulk of the material. The roughly 1 : 1 stoichiometry of electrons and cations indicates that the storage of e(–) in the MOF is tightly coupled to a cation within the architecture, for charge balance.

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