Titanium(III) oxide
# Titanium(III) oxide

Titanium(III) oxide is the inorganic compound with the formula $Ti_2O_3.$ A black semiconducting solid, it is prepared by reducing titanium dioxide with titanium metal at 1600 °C.

$Ti_2O_3$ adopts the $Al_2O_3$ (corundum) structure. It is reactive with oxidising agents. At around 200 °C, there is a transition from semiconducting to metallic conducting. Titanium(III) oxide occurs naturally as the extremely rare mineral in the form of tistarite.

Other titanium(III) oxides include $LiTi_2O_4$ and $LiTiO_2.$

