Han-Ying Liu, Samuel E Neale, Michael S Hill, Mary F Mahon, Claire L McMullin, Emma Richards
The bimetallic species, [{SiNDipp }MgNa]2 [{SiNDipp } = {CH2 SiMe2 N(Dipp)}2 ; (Dipp = 2,6- i -Pr2 C6 H3 )], is shown to be a potent reducing agent, able to effect one- or two-electron reduction of either dioxygen, TEMPO, anthracene, benzophenone, or diphenylacetylene. In most cases, the bimetallic reaction products imply that the dissimilar alkaline metal centers react with a level of cooperativity. EPR analysis of the benzophenone-derived reaction and the concurrent isolation of [{SiNDipp }Mg(OCPh2 )2 ], however, illustrate that treatment with such reducible, but O -basic, species can also result in reactivity in which the metals provide independent reaction products...
April 22, 2024: Organometallics