Sodium-coupled Electron Transfer Reactivity of Metal-organic Frameworks Containing Titanium Clusters: the Importance of Cations in Redox Chemistry

Overview

Journal Chem Sci

Publisher Royal Society of Chemistry

Specialty Chemistry

Date 2019 Feb 28

PMID 30809347

Citations 6

Authors

Caroline T Saouma

Chih-Chin Tsou

Sarah Richard

Rob Ameloot

Frederik Vermoortele

Simon Smolders

Bart Bueken

Antonio G DiPasquale

Werner Kaminsky

Carolyn N Valdez

Dirk E De Vos

James M Mayer

Affiliations

Soon will be listed here.

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 TiO rings: TiO(OH)(bdc); bdc = terephthalate (MIL-125) and TiO(OH)(bdc-NH); bdc-NH = 2-aminoterephthalate (NH-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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