A Novel Heteroditopic Terpyridine-Pincer Ligand as Building Block for Mono- and Heterometallic Pd(II) and Ru(II) Complexes
作者:Marcella Gagliardo、Gema Rodríguez、Henk H. Dam、Martin Lutz、Anthony L. Spek、Remco W. A. Havenith、Paolo Coppo、Luisa De Cola、František Hartl、Gerard P. M. van Klink、Gerard van Koten
DOI:10.1021/ic051967c
日期:2006.3.1
mono- and heterometallic complexes are described. All the above di- and trimetallic Ru complexes exhibit absorption bands attributable to (1)MLCT (Ru --> tpy) transitions. For the heteroleptic complexes, the transitions involving the unsubstituted tpy ligand are at a lower energy than the tpy moiety of the TPBr ligand. The absorption bands observed in the electronic spectra for TPBr and [PdCl(TP)] have
钯催化的Stille偶联反应被用作合成新型联吡啶-钳子(3,TPBr)桥联配体4'-4-BrC6H2(CH2NMe2)2-3,5} -2,2的通用方法':6',2''-叔吡啶。通过NCNBr的选择性金属化合成的单核物质[PdX(TP)](X = Br,Cl),[Ru(TPBr)(tpy)](PF6)2和[Ru(TPBr)2](PF6)2双功能配体TPBr的三聚体部分或三联吡啶的络合物用作制备异二-和三金属配合物[Ru(TPPdCl)(tpy)](PF6)2(7)和[Ru(TPPdCl) 2](PF6)2(8)。[PdBr(TP)](4a)和[Ru(TPBr)2](PF6)2(6)的固态分子结构已通过单晶X射线分析确定。描述了单金属和杂金属配合物的电化学行为和光物理性质。所有以上的二金属和三金属Ru络合物均显示归因于(1)MLCT(Ru-> tpy)跃迁的吸收带。对于杂合配合物,涉及未取代