Exceeding Metal Capacity in Sandwich Complexes: Ligand-Unsupported Docking of Extra Metal Moieties at Edges of a Metal Sheet Sandwich Complex
Exceeding Metal Capacity in Sandwich Complexes: Ligand-Unsupported Docking of Extra Metal Moieties at Edges of a Metal Sheet Sandwich Complex
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DOI：
10.1002/anie.201908850
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发表时间：
2019-09-10
影响因子：
16.6
通讯作者：
Murahashi, Tetsuro
中科院分区：
文献类型：
--
作者：
Ishikawa, Tomoko;Kawamura, Akino;Murahashi, Tetsuro
本文报道了夹心配合物中配体不支持的额外金属部分的容纳。尽管已经认为金属片夹心络合物的金属容量受到环状不饱和烃配体的尺寸的严格限制，但是金属片夹心络合物中的M-M边缘键为额外的金属部分提供了配体未被支撑的对接位点，从而允许夹心络合物中的金属容量的扩展。金属片夹心配合物[Pd-4（mu（4）-C8 H8）（mu（4）-C9 H9）]（+），其中配体基的金属容量是充分的，在配位中使用了较小的碳环配体C8 H8的所有C=C部分，可以容纳额外的M-0{P（OPh）（3）}（2）（M=Pd，Pt）部分，而不需要C9 H9或C8 H8配体的配位辅助。
The ligand-unsupported accommodation of extra metal moieties in a sandwich complex is reported. Although it has been considered that the metal-capacity of a metal sheet sandwich complex is strictly limited by the size of cyclic unsaturated hydrocarbon ligands, the M-M edge bonds in a metal sheet sandwich complex provide a ligand-unsupported docking site for extra metal moieties, allowing expansion of metal-capacity in sandwich complexes. The metal sheet sandwich complex [Pd-4(mu(4)-C8H8)(mu(4)-C9H9)](+), in which the ligand-based metal capacity is full in terms of the usage of all C=C moieties of the smaller carbocyclic ligand C8H8 in coordination, can accommodate extra M-0{P(OPh)(3)}(2) (M=Pd, Pt) moieties without coordinative assistance by either the C9H9 or the C8H8 ligand.