Niobium(V) oxynitrate


Niobium(V) oxynitrate is a chemical compound with the formula NbO(NO3)3. It is a tetragonal white solid that reacts violently with water to produce niobium pentoxide:[1]

Niobium(V) oxynitrate
Other names
  • Niobyl nitrate
  • Niobium oxytrinitrate
  • 100456-47-1 ☒N
3D model (JSmol)
  • Interactive image
EC Number
  • 623-412-8
  • InChI=1S/3NO3.Nb.O/c3*2-1(3)4;;/q3*-1;+3;
  • [Nb](O[N+]([O-])=O)(O[N+]([O-])=O)(O[N+]([O-])=O)=O
Molar mass 294.92 g/mol
Appearance White solid
Melting point 120 °C (248 °F; 393 K)[1] (decomposes)
Solubility Slightly soluble in diethyl ether, MeCN, and benzene[1]
GHS labelling:
GHS03: OxidizingGHS07: Exclamation mark
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
NbO(NO3)3 + H2O → Nb2O5 + HNO3

Preparation Edit

Niobium(V) oxynitrate is produced by the reaction of niobium pentachloride and dinitrogen pentoxide at 30 °C:[1]

NbCl5 + 4N2O5 → NbO(NO3)3 + 5NO2Cl

Nitryl chloride is produced as a byproduct. Attempts to produce this compound by the reaction dinitrogen tetroxide and niobium pentachloride under acetonitrile resulted in the formation of the acetonitrile niobium dioxide dinitrate complex. This compound reacts with water to form niobium pentoxide and decomposes at 65 °C.[2]

References Edit

  1. ^ a b c d e f 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.