A nonclassical dihydrogen adduct of S = ½ Fe(I).

A nonclassical dihydrogen adduct of S = ½ Fe(I).
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DOI:
10.1021/ja207003m
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发表时间:
2011-10-19
影响因子:
15
通讯作者:
Peters, Jonas C.
Peters, Jonas C.
中科院分区:
化学1区
文献类型:
--
作者:
Lee, Yunho;Kinney, R. Adam;Hoffman, Brian M.;Peters, Jonas C.

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我们已经利用了“(SiPiPr 3)Fe(I)”支架容纳另外的轴向配体的能力,并且已经表征了单核S = 1/2 H2-加合物络合物(SiPiPr 3)FeI(H2)。EPR和ENDOR数据,在X-射线结构结果的背景下,揭示了这种复合物提供了一个非常不寻常的例子,结合二氢作为配体的开壳金属络合物。2 K时的H2配体在配体结合口袋内动态重定向,在与三个Fe-P键的强相互作用所产生的能量最小值之间隧穿。
We have exploited the capacity of the ‘(SiPiPr3)Fe(I)’ scaffold to accommodate additional axial ligands and have characterized the mononuclear, S = ½ H2-adduct complex (SiPiPr3)FeI(H2). EPR and ENDOR data, in the context of X-ray structural results, reveal that this complex provides a highly unusual example of an open-shell metal complex that binds dihydrogen as a ligand. The H2 ligand at 2 K dynamically reorients within the ligand-binding pocket, tunneling among the energy minima created by strong interactions with the three Fe-P bonds.
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