Resonance with a cause: applying NMR and NQR spectroscopy to inorganic metal bromides

Riley W. Hooper – @rileyhooper97

We have used 79/81Br NMR and NQR to probe the X-site of CsPbBr3 and CsPb2Br5. By complementing NMR with NQR, we are able to resolve crystallographically similar bromine sites. This work enables further exploration of challenging compounds using halogen NMR & NQR. #GlobalnmrTC2022 pic.twitter.com/yH7hp3hHyc

— Riley (@RileyHooper97) August 3, 2022

Halogen NMR and NQR spectroscopy is often challenging due to large quadrupole moments for the NMR-active nuclei of Cl, Br, and I. Nevertheless, these nuclei can provide invaluable structural and dynamic information for materials. We have studied two such examples of lead-bromide materials via 79/81Br NMR and NQR spectroscopy.