Investigations of solid solutions of CsHSO, and CsH2P04 have led to the discovery of a new compound with a sulfate to phosphate ratio of 2 : 1. Single-crystal X-ray data showed the as-synthesized phase to be monoclinic and not isostructural with any known compounds. AC impedance measurements revealed that, upon heating, the compound undergoes a transformation into a phase of high conductivity a...
