Alkali metal reduction of alkali metal cations.

Alkali metal reduction of alkali metal cations.
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DOI:
10.1038/s41467-023-43925-5
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发表时间:
2023-12-09
影响因子:
16.6
通讯作者:
Hill, Michael S.
Hill, Michael S.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Pearce, Kyle G.;Liu, Han-Ying;Neale, Samuel E.;Goff, Hattie M.;Mahon, Mary F.;Mcmullin, Claire L.;Hill, Michael S.

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与相关标准还原电位提供的合成惯例和预期相反,氯铍酸盐,[{SiNDipp}BeClLi]2 [{SiNDipp} = {CH 2SiMe 2N(Dipp)}2; Dipp = 2,6-i-Pr 2C 6 H3)],与第1族元素反应(M = Na、K、Rb、Cs),以通过Li+阳离子的选择性还原提供相应的较重的碱金属类似物[{SiNDipp}BeClM]2。虽然只有[{SiNDipp}BeClRb]2可以被钾还原成最接近的较轻同系物,但这些物质也可以通过依次较重的第1族金属处理[{SiNDipp}BeClM]2而依次相互转化。密度泛函理论(DFT)与元素热化学相结合的理论分析是用来合理化这些意见,其中考虑的每一个碱金属在其散装金属形式的原子化的相关applications证明是至关重要的占实验观察。在这里,作者证明了与相关标准还原电位提供的预期相反,氯铍酸盐[{SiNDipp}BeClLi]2与第1族元素(M = Na、K、Rb、Cs)反应,以提供相应的较重碱金属类似物[{SiNDipp}BeClM]2。
Counter to synthetic convention and expectation provided by the relevant standard reduction potentials, the chloroberyllate, [{SiNDipp}BeClLi]2 [{SiNDipp} = {CH2SiMe2N(Dipp)}2; Dipp = 2,6-i-Pr2C6H3)], reacts with the group 1 elements (M = Na, K, Rb, Cs) to provide the respective heavier alkali metal analogues, [{SiNDipp}BeClM]2, through selective reduction of the Li+ cation. Whereas only [{SiNDipp}BeClRb]2 is amenable to reduction by potassium to its nearest lighter congener, these species may also be sequentially interconverted by treatment of [{SiNDipp}BeClM]2 by the successively heavier group 1 metal. A theoretical analysis combining density functional theory (DFT) with elemental thermochemistry is used to rationalise these observations, where consideration of the relevant enthalpies of atomisation of each alkali metal in its bulk metallic form proved crucial in accounting for experimental observations. Here the authors demonstate that counter to expectation provided by the relevant standard reduction potentials, a chloroberyllate, [{SiNDipp}BeClLi]2, reacts with the group 1 elements (M = Na, K, Rb, Cs) to provide the respective heavier alkali metal analogues, [{SiNDipp}BeClM]2.
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影响因子: 15
作者:
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