The following oxides are known to exist: Pr2O3 (in several modifications), PrO2 and PrOx (where x = 1.714; 1.778; 1.800; 1.818; 1.883). These oxides are members of the homologous series PrnO2n-2 with n = 7, 9, 10, 11, 12 which exhibit very narrow ranges of homogeneity. Compositional and crystal structure data for the oxides of praseodymium are listed in Table 1, [Mas].
Cited references - 6, figures - 5, tables - 1, chapters - 4