Reductive Dimerization of CO by a Na/Mg(I) Diamide.

Reductive Dimerization of CO by a Na/Mg(I) Diamide.
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DOI:
10.1021/jacs.1c09467
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发表时间:
2021-10-27
影响因子:
15
通讯作者:
Mahon MF
Mahon MF
中科院分区:
化学1区
文献类型:
--
作者:
Liu HY;Schwamm RJ;Neale SE;Hill MS;McMullin CL;Mahon MF

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[{SiNDipp}Mg] [{SiNDipp} = {CH 2SiMe 2N(Dipp)}2; Dipp = 2,6-i-Pr 2C 6 H3]的钠还原提供Mg(I)物质,[{SiNDipp}MgNa]2,其中长Mg-Mg键(>3.2 π)通过持续的Na-芳基相互作用而增强。计算评估表明,该分子最好被认为是包括一个连续的四金属核心,证明了它与CO的反应,这导致在ethynediolate形成介导的不同金属中心的观点。
Sodium reduction of [{SiNDipp}Mg] [{SiNDipp} = {CH2SiMe2N(Dipp)}2; Dipp = 2,6-i-Pr2C6H3] provides the Mg(I) species, [{SiNDipp}MgNa]2, 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.
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