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

Chemical Science
Caroline T SaoumaJames M Mayer

Abstract

Stoichiometric reduction reactions of two metal-organic frameworks (MOFs) by the solution reagents (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.

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Citations

Aug 24, 2019·Chemical Communications : Chem Comm·Zhichao ShaoHongwei Hou
Aug 10, 2021·Journal of the American Chemical Society·Kevin FabrizioCarl K Brozek
Dec 27, 2019·Inorganic Chemistry·Junaid AliViswanathan Baskar
Apr 29, 2020·Inorganic Chemistry·Uppara UgandharViswanathan Baskar
Jul 17, 2020·Chemical Reviews·Jenna L MancusoChristopher H Hendon
Oct 2, 2021·Journal of the American Chemical Society·Iram F MansoorMark C Lipke
Jan 19, 2022·Environmental Science and Pollution Research International·Muhammad HumayunWei Luo

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Methods Mentioned

BETA
NMR
X-ray

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