Synthesis and Characterization of Poly‐NHC‐Derived Silver(I) Assemblies and Their Transformation into Poly‐Imidazolium Macrocycles
作者:Ana Gutiérrez‐Blanco、Christian Dobbe、Alexander Hepp、Constantin G. Daniliuc、Macarena Poyatos、F. Ekkehardt Hahn、Eduardo Peris
DOI:10.1002/ejic.202100245
日期:2021.7.7
Three metallosupramolecular assemblies composed of two bis-NHCs and two silver atoms, [4](PF6)2, two tetra-NHCs and four silver atoms, [7](PF6)4, and two tri-NHCs and three silver atoms [8](BF4)3, have been prepared. Assemblies [4](PF6)2 and [7](PF6)4 feature NHC ligands decorated with terminal olefin groups. Irradiation of [4](PF6)2 yielded complex [5](PF6)2 with two terminal cyclobutane rings linking
三个金属超分子组件由两个双 NHC 和两个银原子组成,[ 4 ](PF 6 ) 2,两个四 NHC 和四个银原子,[ 7 ](PF 6 ) 4和两个三 NHC 和三个银原子[ 8 ](BF 4 ) 3已制备。组件[ 4 ](PF 6 ) 2和[ 7 ](PF 6 ) 4具有用末端烯烃基团装饰的NHC配体。[ 4 ](PF 6 ) 2 的辐照产生复合物 [ 5 ]](PF 6 ) 2具有连接两个双-NHC配体的两个末端环丁烷环。大环tetrakisimidazolium盐H的解放4 - 6(PF 6)4用[反应达到5 ](PF 6)2,用NH 4 CL / NH 4 PF 6。在[ 7 ](PF 6 ) 4 的照射下没有观察到[2+2]环加成,这显然是由于烯烃基团的不利取向。络合物[ 8 ](BF 4 ) 3 的辐照具有三个内部烯烃基团对导致[ 9 ](BF 4 ) 3作为两种异构体的混合物