Revising the highest oxidation states of the 5d elements: The case of iridium(+VII)
Sebastian Riedel, Martin Kaupp, "Revising the highest oxidation states of the 5d elements: The case of iridium(+VII)" Angew. Chem. 2006, 118, 3791-3794 (Angew. Chem. Int. Ed. 2006, 45, 3708 –3711)
Our computational study suggests thus that the highest iridium oxidation state that has a realistic chance of experimental observation is Ir+VII. The experimentally known highest 5d oxidation states for groups 9, 10, and 11 are Os+VIII, Pt+VI, and Au+V, respectively. Adding the computational predicted Hg+IV and Ir+VII states suggests that the trend for the later 5d metals should become a linear decrease. All in all there is a linear increase up to Os and after Os there is a linear decrease down to Hg. This trend is a new observation for the 5d transition metals.