Solid-state NMR of quadrupolar halogen nuclei

A study was conducted to demonstrate solid-state NMR investigation of quadrupolar halogen nuclei. The study also focused on investigating chlorine, bromine, and iodine SSNMR and discussed the experimental data from selected studies of diamagnetic samples, emphasizing on the latest advancements in the field. Significant emphasis was put on quadrupolar interaction (QI) data for 79/81Br and 127I that were available for a wide range of compounds through NQR spectroscopy and Zeeman-perturbed NQR investigations. The Hamiltonian operator (Ĥ) contained a quadrupolar term and Ĥq in case of the quadrupolar chlorine, bromine, and iodine nuclides. It was also observed that the nuclear charge was distributed asymmetrically about the nucleus, as chlorine, bromine, and iodine were quadrupolar nuclei.