Praseodymium(III) fluoride
Praseodymium fluoride is an inorganic compound with the formula PrF3, being the most stable fluoride of praseodymium.
Preparation
The reaction between praseodymium(III) nitrate and sodium fluoride will obtain praseodymium fluoride as a green crystalline solid:There are also literature reports on the reaction between chlorine trifluoride and various oxides of praseodymium, where praseodymium fluoride is the only product. The reaction between bromine trifluoride and praseodymium oxide left in the air for a period of time also produces praseodymium fluoride, but the reaction is incomplete; the reaction between praseodymium(III) oxalate hydrate and bromine trifluoride can obtain praseodymium fluoride, and carbon is also produced from this reaction. Praseodymium fluoride can also be obtained by reacting praseodymium oxide and sulfur hexafluoride at 584 °C.