The Raman Spectrum of Mercury(II) Iodide In High Temperature Solvents

The Raman spectrum of mercury(II) iodide was observed in cesium nitrate at 430°C and in meta- and para-terphenyl at 235 and 240°C, respectively. A single strong polarized line was found at 148. 5 cm ^-1, width at half height 15 cm^-1 in cesium nitrate, and a single line at 154. 0 cm^-1, width at half height 7 cm ^-1 in the terphenyls. The observed spectra are not consistent with interactions of the solute and the solvents involving bonds of highly covalent character, but do not exclude other interactions. In the course of an investigation on the nature of mercury (II) iodide species in solution in molten alkali metal nitrates, 1 2 by its distribution between the salt melts and terphenyl melts ^1,2, it became of interest to study by means of Raman spectroscopy the mercury(II) iodide species formed. Several such studies at.