Recent Advances in Chlorine, Bromine, and Iodine Solid-State NMR Spectroscopy

We survey the latest advances in quadrupolar halogen (Cl, Br, and I) solidstate nuclear magnetic resonance (SSNMR). The reporting period is from August 2008 through to July 2014; prior work has been covered in a previous review from our group (Widdifield et al. [2]). The past 6 years have witnessed a continued growth in the areas of application of chlorine, bromine, and iodine SSNMR. Such areas include the study of halogen-bonded adducts, pharmaceutical polymorphs, inorganic compounds and materials, supported catalysts, ionic liquids, glasses, and more. Many of the new studies focus on the Cl nuclides due to their relatively favorable spectroscopic properties compared to the Br and I nuclides. The first systematic Cl SSNMR studies of covalently bonded chlorine in organic and inorganic compounds have been reported. Higher applied magnetic fields and ongoing technique development continue to open new avenues of opportunity for applications of chlorine, bromine, and iodine SSNMR.