Abstract
Pure quadrupole resonances of bromine or iodine nuclei have been observed in paradibromo- and paradiiodo-benzene; the tetrabromides of carbon, silicon, germanium and tin; germanium and tin tetraiodides; sodium, potassium, and cesium bromates; antimony tribromide and iodide; and cyanogen bromide. For most of these compounds, measurements were made at room temperature and at liquid nitrogen temperature. The results are correlated with chemical bonding and crystal structure data.