Non-classical divalent lanthanide complexes.
Non-classical divalent lanthanide complexes.
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DOI：
10.1039/c001280g
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发表时间：
2010-07
影响因子：
4
通讯作者：
F. Nief
中科院分区：
文献类型：
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作者：
F. Nief
合成非经典的二价稀土配合物，即那些不含经典的Sm(II)、Eu(II)或Yb(II)的配合物，曾经被认为是不可能的。自1997年第一个稳定的稀土配合物被发现以来，除了稀土以外，La(II)、Nb(II)和Dy(II)的稳定配位和有机金属配合物的例子越来越多，配位体系对配合物稳定性的影响也开始被人们所了解。这些非经典的二价化合物表现出非凡的反应活性，因为它们中的一些已经被证明在室温下激活了氮，以及相关的还原的二价类体系，并经历了自发的分子内碳-氢键激活。在不久的将来，应该会发现更多非经典二价化合物的例子，以及它们令人兴奋的反应的新方面。
The synthesis of non-classical divalent lanthanide complexes, i.e. those not containing the classical samarium(II), europium(II) or ytterbium(II), was once thought impossible. Since 1997, when the first stable complex of thulium(II) was discovered, there has been many more examples of stable coordination and organometallic complexes of lanthanum(II), neodymium(II) and dysprosium(II) in addition to thulium(II), and the influence of the ligand system on the stability of the complexes is beginning to be understood. These non-classical divalent compounds show exceptional reactivity as some of them have been shown to activate dinitrogen at room temperature, together with related reduced divalent-like systems, and to undergo spontaneous intramolecular carbon-hydrogen bond activation. Many more examples of non-classical divalent compounds together with new aspects of their exciting reactivity should be discovered in the near future.