Protactinyl nitrate

Protactinyl nitrate
Names
	Other names Protactinium(V) oxynitrate;
Identifiers
CAS Number	13973-99-4 ;
3D model (JSmol)	Interactive image;
	InChI InChI=1S/3NO3.O.Pa/c32-1(3)4;;/q3-1;;+3 Key: HPGAUFDFQPEWQU-UHFFFAOYSA-N;
	SMILES [Pa](O[N+]([O-])=O)(O[N+]([O-])=O)(O[N+]([O-])=O)=O;
Properties
Chemical formula	PaO(NO3)3
Molar mass	433.05 g/mol
Appearance	White solid
Melting point	400 °C (752 °F; 673 K) (decomposition)
Solubility in water	Hydrolysis
Solubility	Soluble in fuming nitric acid
Related compounds
Other cations	Uranyl nitrate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Protactinyl nitrate, protactinium(V) oxynitrate, or erroneously known as protactinium nitrate, is a radioactive chemical compound with the formula PaO(NO₃)₃·xH₂O (1.5 ≤ x ≤ 4). It is a white solid that readily hydrolyzes to protactinium(V) oxide in moist air. This compound is a common commercial source of protactinium.^[2]

Preparation and decomposition

Protactinyl nitrate was first prepared in 1966 by reacting protactinium(V) chloride or protactinium(V) bromide with fuming nitric acid. Lower concentrations of nitric acid cannot be used, due to the hydrolysis of the compound.^[1]

Protactinyl nitrate decomposes at 400 °C to protactinium(V) oxide.^[2]^[1]

References

^ ^a ^b ^c ^d ^e D. Brown; P. J. Jones (1966). "Quinquevalent protactinium, niobium, and tantalum nitrates and nitrato-complexes". Journal of the Chemical Society A: Inorganic, Physical, Theoretical: 733–737. doi:10.1039/J19660000733.
^ ^a ^b R. Grossmann; H.J. Maier; J. Szerypo; H.U. Friebel (2008). "Preparation of 231Pa targets". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 590 (1–3): 122–125. doi:10.1016/j.nima.2008.02.084.

[quin-1] D. Brown; P. J. Jones (1966). "Quinquevalent protactinium, niobium, and tantalum nitrates and nitrato-complexes". Journal of the Chemical Society A: Inorganic, Physical, Theoretical: 733–737. doi:10.1039/J19660000733.

[prep-2] R. Grossmann; H.J. Maier; J. Szerypo; H.U. Friebel (2008). "Preparation of 231Pa targets". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 590 (1–3): 122–125. doi:10.1016/j.nima.2008.02.084.

[1]

[2]

v t e Protactinium compounds
Pa(II)	PaO
Pa(III)	PaH₃ PaN
Pa(IV)	PaO₂ PaCl₄ PaBr₄ PaF₄ PaI₄ PaOCl₂ PaC Pa(C₈H₈)₂
Pa(V)	Pa₂O₅ PaF₅ PaCl₅ PaBr₅ PaI₅ PaO₂F PaO₂Cl PaO₂I PaO(NO₃)₃

Protactinyl nitrate

Protactinyl nitrate

Protactinyl nitrate

Add your contribution

Hub overview

Root Wikipedia Article

Protactinyl nitrate

Preparation and decomposition

References

Names
Other names Protactinium(V) oxynitrate
Identifiers
CAS Number	13973-99-4^Y
3D model (JSmol)	Interactive image
InChI InChI=1S/3NO3.O.Pa/c32-1(3)4;;/q3-1;;+3 Key: HPGAUFDFQPEWQU-UHFFFAOYSA-N
SMILES [Pa](O[N+]([O-])=O)(O[N+]([O-])=O)(O[N+]([O-])=O)=O
Properties
Chemical formula	PaO(NO₃)₃
Molar mass	433.05 g/mol
Appearance	White solid^[1]
Melting point	400 °C (752 °F; 673 K) (decomposition)
Solubility in water	Hydrolysis^[1]
Solubility	Soluble in fuming nitric acid^[1]
Related compounds
Other cations	Uranyl nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references