Niobium(V) oxynitrate

Niobium(V) oxynitrate

Names
Other names Niobyl nitrate Niobium oxytrinitrate
Identifiers
CAS Number	100456-47-1  N
3D model (JSmol)	Interactive image
EC Number	623-412-8
InChI InChI=1S/3NO3.Nb.O/c3*2-1(3)4;;/q3*-1;+3; Key: XWRVJMHGWNZEAR-UHFFFAOYSA-N
SMILES [Nb](O[N+]([O-])=O)(O[N+]([O-])=O)(O[N+]([O-])=O)=O
Properties
Chemical formula	NbO(NO3)3
Molar mass	294.92 g/mol
Appearance	White solid
Melting point	120 °C (248 °F; 393 K) [1] (decomposes)
Solubility in water	Reacts [1]
Solubility	Slightly soluble in diethyl ether, MeCN, and benzene [1]
Structure
Crystal structure	Tetragonal [1]
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H272, H315, H319, H335
Related compounds
Other anions	Niobium oxychloride
Other cations	Vanadyl nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Niobium(V) oxynitrate is an inorganic compound with the proposed formula NbO(NO₃)₃.

A single publication claims that niobium pentachloride and dinitrogen pentoxide react in anhydrous nitric acid at 30 °C to give niobium(V) oxynitrate and a nitryl chloride byproduct: ^[1]

NbCl₅ + 4N₂O₅ → NbO(NO₃)₃ + 5NO₂Cl

The synthesis is quite solvent-dependent. The same reagents in acetonitrile instead form a (acetonitrile)niobium(V) dioxynitrate complex. ^[2]

References

1. B. O. Field; C. J. Hardy (1963). "Trinitratoniobium(V) Oxide, NbO(NO₃)₃". Proceedings of the Chemical Society: 11. doi:10.1039/PS9630000001.
2. K. W. Bagnall; D. Brown; P. J. Jones (1964). "Niobium(V) and tantalum(V) nitrates". Journal of the Chemical Society (451): 2396–2400. doi:10.1039/JR9640002396.