On the physical and semiconducting properties of the crednerite AgMnO2 prepared by sol-gel auto-ignition

Solid-Phase Quasi-Intramolecular Redox Reaction of [Ag(NH3)2]MnO4: An Easy Way to Prepare Pure AgMnO2

“…The amorphous and poorly crystalline material transformed into crystalline phases above 773 K, turned into phase-pure AgMnO 2 ( Figure 8 ) identified in refs ( 8 ) and ( 9 ) at 873 K, and decomposed above 903 K. The general scheme of the transformations of the thermal decomposition products is summarized in Figure 10 . When the samples were heated up to 973 K, the product contained only ca.…”

“…In particular, AgMnO 2 is a promising candidate of delafoyssite-type (CuMnO 2 ) thin films and solar cell components for the preparation of high-energy-density cells. However, its reported synthesis consists of risky steps and potentially explosive reactions such as the autoignition process of AgNO 3 and manganese nitrate with ethylene glycol. , Therefore, the safe preparation of AgMnO 2 in a phase-pure form without the formation of accompanying contaminants is demanding. The temperature-controlled quasi-intramolecular/intracrystal redox reaction of a high-valence manganese oxoacid silver salt looks like an easy and promising method to prepare mixed-metal oxides.…”

Review on the Chemistry of [M(NH3)n](XO4)m (M = Transition Metal, X = Mn, Tc or Re, n = 1–6, m = 1–3) Ammine Complexes

“…Based on the weight loss, the most probable amorphous decomposition product has an "AgMnO2" composition. Although the crystalline AgMnO2 is known as a stable compound of the silver-manganese-oxygen system [78,79], the thermal decomposition of [Ag(NH3)2]MnO4 produced a finely dispersed elementary silver and amorphous MnOx compounds mix- The coordinated ammonia molecules are disordered in both structures. The infinite ladder-like chains of silver ions are parallel to the b-axis and coincide with the 2-fold rotation axes in both structures.…”

“…Based on the weight loss, the most probable amorphous decomposition product has an "AgMnO 2 " composition. Although the crystalline AgMnO 2 is known as a stable compound of the silver-manganeseoxygen system [78,79], the thermal decomposition of [Ag(NH 3 ) 2 ]MnO 4 produced a finely dispersed elementary silver and amorphous MnO x compounds mixture, together with H 2 O, N 2 and NO as gases. The annealing of the solid primary decomposition product at 573 K, the metallic silver reacted with the manganese oxides and resulted in the formation of amorphous silver manganese oxides, which started to crystallize only at 773 K and completely transformed into AgMnO 2 at 873 K (Figure 2).…”