Complexes of substituted derivatives of 2-(2-pyridyl)benzimidazole with Re(i), Ru(ii) and Pt(ii): structures, redox and luminescence properties
作者:Nail M. Shavaleev、Z�e R. Bell、Timothy L. Easun、Ramune Rutkaite、Linda Swanson、Michael D. Ward
DOI:10.1039/b411341a
日期:——
N,N'-Chelating ligands based on the 2-(2-pyridyl)benzimidazole (PB) core have been prepared with a range of substituents (phenyl, pentafluorophenyl, naphthyl, anthracenyl, pyrenyl) connected to the periphery via alkylation of the benzimidazolyl unit at one of the N atoms. These PB ligands have been used to prepare a series of complexes of the type [Re(PB)(CO)(3)Cl], [Pt(PB)(CCR)(2)](where -CCR is an
已经制备了基于2-(2-吡啶基)苯并咪唑(PB)核的N,N'-螯合配体,其中具有一系列取代基(苯基,五氟苯基,萘基,蒽基,pyr基),通过苯并咪唑基的烷基化连接到外围N个原子之一上的单元。这些PB配体已用于制备[Re(PB)(CO)(3)Cl],[Pt(PB)(CCR)(2)]类型的一系列配合物(其中-CCR是乙炔配体)和[Ru(bpy)(2)(PB)] [PF(6)](2)(bpy = 2,2'-联吡啶)。六个配合物已在结构上进行了表征。电化学和发光研究表明,所有三个系列的配合物的行为均类似于具有2,2'-联吡啶代替PB的类似配合物。特别是,所有这三个系列的配合物均显示在553-605 nm(Pt系列)范围内的发光,(3)MLCT状态产生的620-640 nm(Re系列)和626-645 nm(Ru系列),Pt(II)系列的成员是最强的发射体,寿命高达500 ns,量子产率在室温下在空气