Comportement thermique des seleniates de cuivre, CuSeO4 · 5 H2O et CuSeO4 · 2 Cu(OH)2

Cu3(SeO4)2(SeO3OH)2(H2O)16 – The First Example of a Linear Octahedral–Tetrahedral Heptamer in Inorganic Compounds

“…These results are comparable with the previously reported multistep dehydration behavior of CuSeO 4 · 5H 2 O 12a. The decomposition of selenate ion with sublimation of SeO 2 occurs between 400 and 700 °C (48.7 wt.‐%; endothermic minima at 493.7 and 569.2 °C) 12b. The weight loss above 800 °C (3.2 wt.‐%) can be explained by the decomposition of CuO (tenorite) with the release of oxygen and the formation of Cu 2 O (cuprite).…”