Properties of double chlorides in the systems ACl/NdCl3(A=Na-Cs)

Article abstract of DOI:10.1007/BF02138565

The pseudobinary systems ACl/NdCl₃(A=Na-Cs) were reinvestigated by means of DTA. With a galvanic cell for solid electrolytes the thermodynamic functions of formation from ACl and NdCl₃ together with the free enthalpies of synproportionation from the compounds adjacent in the phase diagrams were measured. They revealed, that only the compounds A₂NdCl₅ are stable at ambient temperature. All other compounds are existing by a gain of entropy only at higher temperatures. The crystal structures of the compounds were determined by X-ray analysis on powders: the compounds are isotypic with the analogous double chlorides of La and Ce.