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]
| |
| Names | |
|---|---|
Other names
| |
| Identifiers | |
3D model (JSmol)
|
|
| |
| |
| Properties | |
| PrNO | |
| Molar mass | 170.91 g/mol |
| Melting point | −261 °C (−437.8 °F; 12.1 K) (decomposes) |
| Structure | |
| linear | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Reactions
editPraseodymium(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
edit- ^ 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.