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Lanthanide alkylidene and imido complexes

机译:镧系元素亚烷基和亚氨基配合物

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摘要

In stark contrast to the transition metals, examples of imido or alkylidene complexes of the lanthanides remain scarce. A recent literature survey reveals that only nine examples of lanthanide imido complexes have been reported, and the majority of these have arisen serendipitously. Concrete examples of species containing lanthanide-carbon multiple bonds are even more sparse. Recently, some rational approaches to the synthesis of lanthanide complexes containing Ln=X functionalities have been detailed (X=C, N). Additionally, a DFT (Density Functional Theory) study of a samarium imido complex has provided insight into the electronic and steric factors that may be necessary to support these unusual reactive groups. This Perspective reviews the work in this field and offers some suggestions to expand this potentially useful class of compounds.
机译:与过渡金属形成鲜明对比的是,镧系元素的亚氨基或亚烷基络合物的例子仍然很少。最近的一项文献调查显示,仅报道了9个镧系元素亚氨基复合物的实例,其中大多数是偶然出现的。含有镧系元素-碳多键的物种的具体例子更为稀疏。最近,已经详细描述了一些合成具有Ln = X官能团的镧系元素配合物的合理方法(X = C,N)。此外,对im亚氨基复合物的DFT(密度泛函理论)研究提供了对于支持这些异常反应基团可能必需的电子和空间因素的见解。本“观点”回顾了该领域的工作,并提出了一些建议,以扩展这种可能有用的化合物类别。

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