三核钌配合物中分子内电子转移

Intramolecular Electron Transfer in Trinuclear Ruthenium Complex

本文合成了全反式的三核钌(Ru)联吡啶配合物Ru(bpy)_2—(—ImRu(bpy)_2)_2^(4+),对其进行了元素分析,红外光谱、紫外—可见光谱表征,用Ce(SO4)_2对该配合物进行不同程度的氧化,得到了不同的混合价态配合物,用紫外—可见光谱讨论了混合价态配合物中电子转移性质,表明其中存在不同类型的跃迁,其中包括价间转移(IT)跃迁,并根据IT谱带参数估算了电子离域程度和金属中心偶合程度。

Trinuclear Ruthenium complex of trans-configuration has been synthesized and characterized by element analysis, IR and UV-VIS spectrum. Different mixed-valence complexes are obtained by Ce (SO_4)_2. The intramoleeular electron transfer is studied with UV-VIS-NIR spectrum. Different kinds of transitions are found, including the inter-valence transfer(IT)between ruthenium atoms of adjacent moieties. The valence delocalization parameter α~2 and the electron matrix element HAB are calculated from the Parameters of the IT spectrum.