Abstract
Anhydrous acetates of Y, La, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu were prepared by desolvation of the acetates in vacuum at 150°C after dissolution of the oxides in 50 per cent acetic acid and evaporation to dryness. Acetates of Pr and Nd did not reach constant composition before decomposition occurred. A hemihydrate of Sm acetate was formed which decomposed at temperatures above 150°C without converting to the anhydrous acetate. Hemihydrates of Tb and Ho were formed at about 75°C.
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