作者:Paul de Wolf、Sarah L Heath、Jim A Thomas
DOI:10.1016/s0020-1693(03)00370-0
日期:2003.11
4′″-quaterpyridyl ligand, with d6 ReI and d8 PdII and PtII metal centres has been investigated. This has lead to the synthesis, isolation and characterisation of seven new complexes. The UV–Vis absorption spectra of the new complexes are dominated by intraligand and charge transfer bands. While the d8 metal complexes are not emissive, the ReI complexes display broad unstructured luminescence that is
研究了先前报道的2,2':4,4'':4',4'''-四吡啶基配体与d 6 Re I和d 8 Pd II和Pt II金属中心的反应。这导致了七个新复合物的合成,分离和表征。新配合物的UV-Vis吸收光谱主要受配体和电荷转移带的支配。尽管d 8金属配合物不发光,但Re I配合物显示出宽泛的非结构化发光,这与Re(d)→diimine(π*)流形的发射相一致。电化学研究表明d 8金属配合物和Re I之一配合物仅显示基于不可逆配体的还原。但是,其余的另外两个Re I络合物则显示出化学不可逆的基于金属的氧化。考虑到配体的σ-和π-供体/受体特性,已使配合物的光物理和电化学性质合理化。