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

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Abstract

Stoichiometric reduction reactions of two metal–organic frameworks (MOFs) by the solution reagents Image ID:c8sc04138e-t1.gif (M = Cr, Co) are described. The two MOFs contain clusters with Ti8O8 rings: Ti8O8(OH)4(bdc)6; bdc = terephthalate (MIL-125) and Ti8O8(OH)4(bdc-NH2)6; bdc-NH2 = 2-aminoterephthalate (NH2-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.

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

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Publication details

The article was received on 18 Sep 2018, accepted on 17 Nov 2018 and first published on 19 Nov 2018


Article type: Edge Article
DOI: 10.1039/C8SC04138E
Citation: Chem. Sci., 2019, Advance Article
  • Open access: Creative Commons BY-NC license
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    Sodium-coupled electron transfer reactivity of metal–organic frameworks containing titanium clusters: the importance of cations in redox chemistry

    C. T. Saouma, C. Tsou, S. Richard, R. Ameloot, F. Vermoortele, S. Smolders, B. Bueken, A. G. DiPasquale, W. Kaminsky, C. N. Valdez, D. E. De Vos and J. M. Mayer, Chem. Sci., 2019, Advance Article , DOI: 10.1039/C8SC04138E

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