Uranium hexoxide
Uranium hexoxide is an unusual, theoretically possible compound of uranium in which the uranium atom would be attached to six oxygen atoms. It would be an unprecedented example of an element in the +12 oxidation state; for comparison, the highest known oxidation state is +9 for iridium in the cation . Structure. Uranium hexoxide is predicted to have octahedral symmetry; however, other forms have been studied. In the O the oxygen atoms are oxide ions (O). In the D form there are three peroxide ions (). The D form has two oxo oxygens and two pairs of superoxide (). Uranium hexoxide