Praseodymium(V) oxide nitride

Praseodymium(V) oxide nitride is a compound of praseodymium in the oxidation state of +5 with the chemical formula PrNO. It was first reported in 2000.^[1] However, the compound was not verified to have an oxidation state of +5 until 2017. This compound is produced by the reaction of praseodymium metal and nitric oxide in 4K and solid neon. The crystal structure is linear with the praseodymium forming a triple bond with the nitrogen and a double bond with the oxygen.^[2] Calculation shows a significant level of f-orbital covalence of Pr-X bonds.^[3]

Praseodymium(V) oxide nitride

Names
Other names Praseodymium oxide nitride Praseodymium nitride oxide
Identifiers
CAS Number	259684-40-7 Y
3D model (JSmol)	Interactive image
InChI InChI=1S/N.O.Pr Key: JBLQFJMZHFUYOA-UHFFFAOYSA-N
SMILES O=[Pr]#N
Properties
Chemical formula	PrNO
Molar mass	170.91 g/mol
Melting point	−261 °C (−437.8 °F; 12.1 K) (decomposes)
Structure
Molecular shape	linear
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Reactions

Praseodymium(V) oxide nitride further reacts with nitric oxide to form complexes such as NPrO(NO) and NPrO(NO)₂ which shows that this compound is a lewis acid. This compound also decomposes to praseodymium(IV) oxide and nitrogen:^[2]

PrNO → PrO₂ + N₂

See also

• Oxynitride