The quasi-ternary system Ag 2S [sbnd]CdS [sbnd]GeS 2 and the crystal structure of Ag 2CdGeS 4

Abstract

The isothermal section of the Ag 2S CdS GeS 2 systems at 298 K was constructed using X-ray diffraction analysis. Two quaternary intermediate compounds, Ag 2CdGeS 4 and Ag 4CdGe 2S 7, exist in the system at this temperature. The phase diagram of the Ag 8GeS 6 CdS section was constructed which is of the peritectic type. Powder X-ray diffraction was used to refine the crystal structure of Ag 2CdGeS 4, which crystallizes in the orthorhombic structure (space group Pmn2 1, a = 0.80338(3), b = 0.68680(2), c = 0.65866(3) nm, R I = 0.0766).