Abstract: | Ag5GeO4, the First Subvalent Ternary Silver Oxide Applying high oxygen pressure the first subvalent ternary silver oxide Ag5GeO4 was obtained (for crystallographic data c.f. “Inhaltsübersicht”). Ag5GeO4 contains tetrahedral GeO44?-ions besides Ag6]4+ clusters, which have not been observed in ternary silver oxides, so far. The electrical and magnetical properties prove the localisation of two paired electrons in each silver octahedron. The thermal decomposition occurs in two steps at 432.7 °C and 524.5°C. |