氰桥钌配合物的设计合成及谱学性质研究

Synthesis and Photophysical Properties of Cyano Bridged Complexes of Ru(Ⅱ)

设计合成了一系列二核和三核（ 金属离子的个数） 钌（ Ⅱ） 吡啶和联吡啶混合配体的化合物。利用色谱柱分离法使产物得以有效的分离。这类化合物在组成上具有吡啶和联吡啶两种配体，两组元分别为顺、反结构。这种组成和结构上的特殊性，使得这些化合物的光物理和光化学性质与已有的二核化合物相比，具有独特之处：一个化合物中具有几个不同金属向配体的电子跃迁过程（ ＭＬＣＴ） 。它们的ＩＲ吸收特征，特别是氰配体成桥后ＩＲ 振动频率的变化，证明了二核和三核化合物的形成。所得新化合物具有较强的光致发光性能，在一个化合物中同时具有两个不同波长的发射峰，这一发光特性与它们的二元组成是相对应的。

The special property of the NO\++ ligand which can be solvated by azide\|assisted labilization of the nitrosyl ligand in the Ru(Ⅱ) complexes was applied in the synthesis of the new complexes:NO\-2\|Ru (bpy)\-2 \|NC\|Ru\|(py)\-4\|CN\++,Cl\|Ru(bpy)\-2\|NC\|Ru(py)\-4\|CN\++,NO\-2\|Ru(bpy)\-2\|NC\|Ru(py)\-4\|CN\|Ru\|(bpy)\-2\|NO\+ 2+ \-2 and Cl\|Ru(bpy)\-2\|NC\|Ru(py)\-4\|CN\|Ru(bpy)\-2Cl 2+ (bpy=2,2′\|bipyridine,py=pyridine). The UV\|Visible spectra,the IR spectra and the photo\|luminescence properties of these complexes were studied. It has been shown from the elemental analysis, the UV\|Visible spectra and the IR spectra, that the new complexes we designed were prepared.It is very interesting that there are two different MLCT(metal\|to\|ligand charge transfer) process and two photo\|luminescence emission bands in one molecule. These special photophysical properties were the results of the special configuration and buildups of the different blocks in the new complexes. This will present the advantage for the study of the electron transfer within those molecules.