Multiple C−H Bond Activations in Corannulene by a Dirhenium Complex

Multiple C−H Bond Activations in Corannulene by a Dirhenium Complex
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二铼络合物对 Corannulene 中的多个 C–H 键激活

DOI:
10.1002/chem.201806405
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发表时间:
2019
期刊:
Chemistry – A European Journal
影响因子:
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通讯作者:
Smith, Mark D.
Smith, Mark D.
中科院分区:
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文献类型:
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作者:
Adams, Richard D.;Dhull, Poonam;Pennachio, Matthew;Petrukhina, Marina A.;Smith, Mark D.

文献摘要

相似文献

Re 2(CO)8(μ-C6 H5)(μ-H),1与corannulene(C20 H10)的反应产生产物Re 2(CO)8(μ-H)(μ-η2 - 1,2-C20 H9),2(65%产率),其含有通过从1失去苯和通过氧化加成至1活化非平面corannulene分子的CH键之一而形成的Re 2金属化corannulene配体。角轮烯基配体采用了与Re 2(CO)8基团的桥连η2-σ+π配位。化合物2与第二当量的1反应,得到三种异构的双金属化的corannulene产物:Re2(CO)8(μ-H)(μ-η2 - 1,2-μ-η2 - 10,11-C20H8)Re2(CO)8(μ-H),3(35%产率),Re 2(CO)8(μ-H)(μ-η2 - 2,1-μ-η2 - 10,11-C20H8)Re2(CO)8(μ-H),4(12%产率)和Re 2(CO)8(μ-H)(μ-m2 - 1,2-μ-m2 - 11,10-C20 H8)Re 2(CO)8(μ-H),5(12%产率),通过在corannulene分子上的第二个边缘双键上的第二次CH活化。异构体的不同在于配位的Re 2(CO)8(μ-H)基团的相对取向。所有新产品均通过单晶X射线衍射分析进行结构表征。
The reaction of Re2(CO)8(μ‐C6H5)(μ‐H),1with corannulene (C20H10) yielded the product Re2(CO)8(μ‐H)(μ‐η2‐1,2‐C20H9),2(65 % yield) containing a Re2metalated corannulene ligand formed by loss of benzene from1and the activation of one of the CH bonds of the nonplanar corannulene molecule by an oxidative‐addition to1. The corannulenyl ligand has adopted a bridging η2‐σ+π coordination to the Re2(CO)8grouping. Compound2reacts with a second equivalent of1to yield three isomeric doubly metalated corannulene products: Re2(CO)8(μ‐H)(μ‐η2‐1,2‐μ‐η2‐10,11‐C20H8)Re2(CO)8(μ‐H),3(35 % yield), Re2(CO)8(μ‐H)(μ‐η2‐2,1‐μ‐η2‐10,11‐C20H8)Re2(CO)8(μ‐H),4(12 % yield), and Re2(CO)8(μ‐H)(μ‐η2‐1,2‐μ‐η2‐11,10‐C20H8)Re2(CO)8(μ‐H),5(12 % yield), by a second CH activation on a second rim double bond on the corannulene molecule. The isomers differ by the relative orientations of the coordinated Re2(CO)8(μ‐H) groupings. All new products were characterized structurally by single crystal X‐ray diffraction analysis.