Observation of a new polyhalide phase in Ag-Cl${}_2$ system at high pressure

In this short contribution, we examine Raman spectroscopic data from high-pressure and high-temperature experiments with Ag-Cl${}_2$ system, and find that they are in good agreement with previously observed and calculated spectra of polychloride species. Our results imply the formation of a hitherto unknown AgCl${}_x$ compound, which warrants further study.