Graph showing the praseodymium-oxygen system.

The Praseodymium-oxygen system is a system of oxides of praseodymium at different phases.

Value Formula Phase x in PrOx Average oxidation state of Pr
4 Pr2O3 θ 1.5 3
7 Pr7O12 ι 1.714 3.428
9 Pr9O16 ζ 1.778 3.556
10 Pr5O9 ε 1.8 3.6
11 Pr11O20 δ 1.818 3.636
12 Pr6O11 β 1.833 3.667
PrO2 2 4

This occurs due to the oxides being composed of octahedral Frenkel defects {Pr3+
2
Pr4+
1.5
O6}.Cite error: A <ref> tag is missing the closing </ref> (see the help page).

See also

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References

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Category:Praseodymium compounds Category:Praseodymium