Activation of CO by Hydrogenated Magnesium(I) Dimers: Sterically Controlled Formation of Ethenediolate and Cyclopropanetriolate Complexes
- Ralte Lalrempuia (1563898)
- Christos E. Kefalidis (1415137)
- Simon J. Bonyhady (1563901)
- Benedikt Schwarze (1563895)
- Laurent Maron (1346082)
- Andreas Stasch (1563889)
- Cameron Jones (1563892)
DOIAbstract
This study details the formal hydrogenation of two magnesium(I) dimers {(Nacnac)Mg}<sub>2</sub> (Nacnac = [{(C<sub>6</sub>H<sub>3</sub>R<sub>2</sub>-2,6)NCMe}<sub>2</sub>CH]<sup>−</sup>; R = Pr<sup><i>i</i></sup> (<sup>Dip</sup>Nacnac), Et (<sup>Dep</sup>Nacnac)) using 1,3-cyclohexadiene. These reactions afford the magnesium(II) hydride complexes, {(Nacnac)Mg(μ-H)}<sub>2</sub>. Their reactions with excess CO are sterically controlled and lead cleanly to different C–C coupled products, viz. the ethenediolate complex, (<sup>Dip</sup>Nacnac)Mg{κ<sup>1</sup>-<i>O</i>-[(<sup>Dip</sup>Nacnac)Mg(κ<sup>2</sup>-<i>O</i>,<i>O</i>-O<sub>2</sub>C<sub>2</sub>H<sub>2</sub>)]}, and the first cyclopropanetriolate complex of any metal, <i>cis</i>-...