Praseodymium(V) oxide nitride

Praseodymium(V) oxide nitride
Names
	Other names Praseodymium oxide nitride; Praseodymium nitride oxide;
Identifiers
CAS Number	259684-40-7 ;
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

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]

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

References

^ Willson, Stephen P.; Andrews, Lester; Neurock, Matthew (21 January 2000). "Characterization of the Reaction Products of Laser-Ablated Lanthanide Metal Atoms with Nitric Oxide. Infrared Spectra of the NLnO Molecules in Solid Argon". The Journal of Physical Chemistry A. 104 (16): 3446–3456. doi:10.1021/jp992727j. eISSN 1520-5215. ISSN 1089-5639.
^ ^a ^b Hu, Shu-Xian; Jian, Jiwen; Su, Jing; Wu, Xuan; Li, Jun; Zhou, Mingfei (2017). "Pentavalent lanthanide nitride-oxides: NPrO and NPrO− complexes with N≡Pr triple bonds". Chemical Science. 8 (5): 4035–4043. doi:10.1039/C7SC00710H. ISSN 2041-6520. PMC 5434915. PMID 28580119.
^ Zhang, Wen-Jing; Wang, Guan-Jun; Zhang, Ping; Zou, Wenli; Hu, Shu-Xian (2020). "The decisive role of 4f-covalency in the structural direction and oxidation state of XPrO compounds (X: group 13 to 17 elements)". Physical Chemistry Chemical Physics. 22 (47): 27746–27756. Bibcode:2020PCCP...2227746Z. doi:10.1039/d0cp04700g. eISSN 1463-9084. ISSN 1463-9076. PMID 33242323. S2CID 227182479.

[1] Willson, Stephen P.; Andrews, Lester; Neurock, Matthew (21 January 2000). "Characterization of the Reaction Products of Laser-Ablated Lanthanide Metal Atoms with Nitric Oxide. Infrared Spectra of the NLnO Molecules in Solid Argon". The Journal of Physical Chemistry A. 104 (16): 3446–3456. doi:10.1021/jp992727j. eISSN 1520-5215. ISSN 1089-5639.

[+5-2] Hu, Shu-Xian; Jian, Jiwen; Su, Jing; Wu, Xuan; Li, Jun; Zhou, Mingfei (2017). "Pentavalent lanthanide nitride-oxides: NPrO and NPrO− complexes with N≡Pr triple bonds". Chemical Science. 8 (5): 4035–4043. doi:10.1039/C7SC00710H. ISSN 2041-6520. PMC 5434915. PMID 28580119.

[3] Zhang, Wen-Jing; Wang, Guan-Jun; Zhang, Ping; Zou, Wenli; Hu, Shu-Xian (2020). "The decisive role of 4f-covalency in the structural direction and oxidation state of XPrO compounds (X: group 13 to 17 elements)". Physical Chemistry Chemical Physics. 22 (47): 27746–27756. Bibcode:2020PCCP...2227746Z. doi:10.1039/d0cp04700g. eISSN 1463-9084. ISSN 1463-9076. PMID 33242323. S2CID 227182479.

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