Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K.
J Am Chem Soc. 2021 Oct 27;143(42):17851-17856. doi: 10.1021/jacs.1c09467. Epub 2021 Oct 15.
Sodium reduction of [{SiN}Mg] [{SiN} = {CHSiMeN(Dipp)}; Dipp = 2,6-PrCH] provides the Mg(I) species, [{SiN}MgNa], 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.
[{SiN}Mg] （[{SiN} = {CHSiMeN(Dipp)}; Dipp = 2,6-PrCH]）的钠还原提供了 Mg(I) 物种 [{SiN}MgNa]，其中长的 Mg-Mg 键（>3.2 Å）通过持久的 Na-芳基相互作用得到增强。计算评估表明，该分子最好被认为包含一个连续的四金属核，这一观点得到了其与 CO 反应的支持，反应结果是通过不同的金属中心介导形成了炔二酸盐。
