Tags: Chemical Compound, Chemical Substance.
Niobium dioxide is the chemical compound with the formula NbO2. It is a bluish black non-stoichiometric solid with a composition range of NbO1.94-NbO2.09 It can be prepared by reacting Nb2O5 with H2 at 800–1350 °C. An alternative method is reaction of Nb2O5 with Nb powder at 1100 °C.The room temperature form NbO2 has a tetragonal rutile-like structure with short Nb-Nb distances indicating Nb-Nb bonding.
