Trioxide

A trioxide is a compound with three oxygen atoms. For metals with the M 2 O 3 formula there are several common structures. Al 2 O 3 , Cr 2 O 3 , Fe 2 O 3 , and V 2 O 3 adopt the corundum structure. Many rare earth oxides adopt the "A-type rare earth structure" which is hexagonal. Several others plus indium oxide adopt the "C-type rare earth structure", also called "bixbyite", which is cubic and related to the fluorite structure.

A trioxide is a compound with three oxygen atoms. For metals with the M 2 O 3 formula there are several common structures. Al 2 O 3 , Cr 2 O 3 , Fe 2 O 3 , and V 2 O 3 adopt the corundum structure. Many rare earth oxides adopt the "A-type rare earth structure" which is hexagonal. Several others plus indium oxide adopt the "C-type rare earth structure", also called "bixbyite", which is cubic and related to the fluorite structure. ==List of trioxides== ===MO 3 === Carbon trioxide, CO 3 Chromium trioxide, CrO 3 Molybdenum trioxide, MoO 3 Rhenium trioxide, ReO 3 Selenium trioxide, SeO 3 Sulfur trioxide, SO 3 Tellurium trioxide, TeO 3 Tungsten trioxide, WO 3 Uranium trioxide, UO 3 Xenon trioxide, XeO 3 ===M 2 O 3 === Antimony trioxide, Sb 2 O 3 Arsenic trioxide, As 2 O 3 Bismuth(III) oxide, Bi 2 O 3 Boron trioxide, B 2 O 3 Cobalt(III) oxide, Co 2 O 3 Dichlorine trioxide, Cl 2 O 3 Dinitrogen trioxide, N 2 O 3 Gadolinium oxide, Gd 2 O 3 Gallium(III) oxide, Ga 2 O 3 Gold trioxide, Au 2 O 3 Indium(III) oxide, In 2 O 3 Iron(III) oxide, Fe 2 O 3 Manganese(III) oxide, Mn 2 O 3 Nickel(III) oxide, Ni 2 O 3 Phosphorus trioxide, P 4 O 6 (named before the true formula known) Thallium(III) oxide, Tl 2 O 3 Terbium(III) oxide, Tb 2 O 3 Trioxidane, H 2 O 3 Vanadium trioxide, V 2 O 3 Ytterbium(III) oxide, Yb 2 O 3 Yttrium(III) oxide, Y 2 O 3 ===Other trioxides=== Mineral trioxide aggregate Sulfur trioxide pyridine complex, SO 3 (py) ==References==

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