使用K/Ln[N(SiMe₃)₂]₃还原体系将二氮还原为Y、Ho、Tm和Lu的平面双金属M₂(μ-η²:η²-N₂)配合物。
Reduction of dinitrogen to planar bimetallic M2(mu-eta 2:eta 2-N2) complexes of Y, Ho, Tm, and Lu using the K/Ln[N(SiMe3)2]3 reduction system.
作者信息
Evans William J, Lee David S, Ziller Joseph W
机构信息
Department of Chemistry, University of California, Irvine, California 92697-2025, USA.
出版信息
J Am Chem Soc. 2004 Jan 21;126(2):454-5. doi: 10.1021/ja036923m.
The reaction of Ln[N(SiMe3)2]3 with K under N2 in THF forms the dinitrogen complexes {[(Me3Si)2N]2(THF)Ln}2(mu-eta2:eta2-N2) (Ln = Y, Ho, Tm, and Lu) previously available only for lanthanides with highly reducing divalent states, that is, Tm, Dy, and Nd. The Y and Lu complexes are the first diamagnetic complexes of this type. The Ln2N2 moiety is planar, and the 1.268(3) and 1.285(4) A NN distances in these complexes are consistent with the presence of (N2)2-.
Ln[N(SiMe3)2]3在氮气氛围下于四氢呋喃中与钾反应，生成二氮配合物{[(Me3Si)2N]2(THF)Ln}2(μ-η2:η2-N2)（Ln = Y、Ho、Tm和Lu），这类配合物之前仅在具有高还原二价态的镧系元素（即Tm、Dy和Nd）中出现过。Y和Lu的配合物是此类中的首个抗磁性配合物。Ln2N2部分呈平面结构，这些配合物中1.268(3) Å和1.285(4) Å的NN距离与(N2)2-的存在相符。
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