biostudies-literatureLiu HYRoyal Commission for the Exhibition of 1851Engineering and Physical Sciences Research Council17851-17856https://www.ebi.ac.uk/biostudies/studies/S-EPMC8554760biostudies-literatureUnknown143(42)Sodium reduction of [{SiN<sup>Dipp</sup>}Mg] [{SiN<sup>Dipp</sup>} = {CH<sub>2</sub>SiMe<sub>2</sub>N(Dipp)}<sub>2</sub>; Dipp = 2,6-<i>i-</i>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>] provides the Mg(I) species, [{SiN<sup>Dipp</sup>}MgNa]<sub>2</sub>, in which the long Mg-Mg bond (>3.2 Å) is augmented by persistent Na-aryl interactions. Computational assessment indicates that this molecule is best considered to comprise a contiguous tetrametallic core, a viewpoint borne out by its reaction with CO, which results in ethynediolate formation mediated by the dissimilar metal centers.Journal of the American Chemical SocietyReductive Dimerization of CO by a Na/Mg(I) Diamide.PMC8554760EP/R020752/1McMullin CLLiu HYHill MSSchwamm RJNeale SEMahon MFfalseReductive Dimerization of CO by a Na/Mg(I) Diamide.Sodium reduction of [{SiN<sup>Dipp</sup>}Mg] [{SiN<sup>Dipp</sup>} = {CH<sub>2</sub>SiMe<sub>2</sub>N(Dipp)}<sub>2</sub>; Dipp = 2,6-<i>i-</i>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>] provides the Mg(I) species, [{SiN<sup>Dipp</sup>}MgNa]<sub>2</sub>, in which the long Mg-Mg bond (>3.2 Å) is augmented by persistent Na-aryl interactions. Computational assessment indicates that this molecule is best considered to comprise a contiguous tetrametallic core, a viewpoint borne out by its reaction with CO, which results in ethynediolate formation mediated by the dissimilar metal centers.2021-01-01T00:00:00Z2021 Oct2025-04-19T15:35:11.096Z2025-04-19T15:35:11.096ZS-EPMC85547603465213410.1021/jacs.1c09467