RIS ID

143036

Publication Details

Bryant, M. R. & Richardson, C. (2020). Hypervalent organoiodine(v) metal-organic frameworks: Syntheses, thermal studies and stoichiometric oxidants. Dalton Transactions, 49 (16), 5167-5174.

Abstract

This journal is © The Royal Society of Chemistry. Iodinated analogues of the highly porous IRMOF-9 and UiO-67 frameworks were prepared and post-synthetically oxidised with dimethyldioxirane (DMDO). Analysis by X-ray photoelectron spectroscopy (XPS) confirmed promotion to the iodine(v) state and detailed differential scanning calorimetry-thermal gravimetric analysis (DSC-TGA) showed the hypervalent metal-organic frameworks (MOFs) undergo exothermic elimination at ∼200 °C with XPS showing hypervalency is maintained. The hypervalent MOFs are active heterogeneous reagents in sulfoxidation and alcohol oxidation reactions. The crystallinity and porosity of the MOFs were maintained following post-synthetic oxidation, thermolysis and after the heterogeneous reactions, as shown by powder X-ray diffraction (PXRD) and gas adsorption analyses. This work showcases the unique ability MOFs hold for studying chemical reactions and the potential for hypervalent organoiodine MOFs as reuseable oxidants.

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Link to publisher version (DOI)

http://dx.doi.org/10.1039/d0dt00870b