Solid-state NMR studies of metal ion and solvent influences upon the flexible metal-organic framework DUT-8

Research output: Contribution to journalResearch articleContributedpeer-review



Within the present contribution, we describe solid-state NMR spectroscopic studies of the paddle wheel unit in the prototypic flexible MOF compound DUT-8(M) (M = Ni, Co, Zn). The 13C NMR chemical shift of these carboxylates shows a remarkable behavior. The pure 2,6-H2ndc linker carboxylates as well as DUT-8(Zn) exhibit a13C chemical shift of only about 170 ppm. In contrast, much higher values are observed for DUT-8(Ni) and especially DUT-8(Co). In the open pore state, the shift strongly depends on the solvent polarity in these two latter cases. The present contribution elucidates the reason for this solvent influence. It is concluded that the solvent mainly modifies the isotropic Fermi contact coupling constant for the excited high-spin states in DUT-8(Ni) and DUT-8(Co).


Original languageEnglish
Article number101809
JournalSolid state nuclear magnetic resonance : an international journal
Issue number120
Publication statusPublished - Aug 2022

External IDs

PubMed 35753266
WOS 000827040800004
Mendeley f04ab2b1-0226-3356-a0c9-492b8985e799



  • C MAS NMR, Metal-organic framework, Paddle wheel unit, Paramagnetism, Solvent, Solvents, Magnetic Resonance Spectroscopy/methods, Metal-Organic Frameworks, Metals, Models, Molecular