Uranium hexoxide is an unusual, theoretically possible compound of uranium in which the uranium atom would be attached to six oxygen atoms.[1][2] 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 IrO+
4.[3]
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3D model (JSmol)
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Properties | |
UO6 | |
Molar mass | 334.0288 g/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Uranium hexoxide is predicted to have octahedral symmetry; however, other forms have been studied. In the 1Oh the oxygen atoms are oxide ions (O2−). In the 1D3 form there are three peroxide ions (O2−
2). The 3D2h form has two oxo oxygens and two pairs of superoxide (O−
2).[2]