Uranium hexoxide
Postulated chemical compound / From Wikipedia, the free encyclopedia
Uranium hexoxide is an unusual, theoretically possible compound of uranium in which the uranium atom would be attached to six oxygen atoms.[1][2] Some sources claimed it would be an unprecedented example of an element in the +12 oxidation state;[1] for comparison, the highest known oxidation state is +9 for iridium in the cation IrO+
4.[3][4] This oxidation state assignment requires participation of 6p electrons of uranium as valence electrons. This assertion was disputed by a later paper,[2] which formulates the octahedral species as O(–I) and U(VI), although it does acknowledge that the question of valence shell expansion of uranium and other actinoids is complex and that the "semi-core" 6p electrons of uranium are involved to a non-negligible extent in the bonding of structures such as octahedral UO6.
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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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