摘要
我们利用DFT中的B3LYP方法优化了Ru(Ⅱ)配合物和氧化的Ru(Ⅲ)配合物[Ru(bpy)(PH3)(-C≡CC6H4NO2-p)Cl]m[bpy=2,2′-bipyridine;m=0(1),+1(1+)]的基态几何结构,得到的几何参数与实验结果吻合的很好。采用TDDFT方法,得到了配合物1和1+的激发态电子结构和电子吸收光谱。研究结果表明,配合物1和1+随着氧化过程的发生,光谱性质也发生变化,Ru(Ⅱ)配合物的低能吸收被指认为MLCT/LLCT混合跃迁,而氧化的Ru(Ⅲ)配合物1+的低能吸收具有LMCT跃迁性质。
The ruthenium(Ⅱ) and ruthenium (Ⅲ) complexes [Ru(bpy)(PH3)(-C - CC6H4NO2-p)CI]^m [bpy=2,2'-bipyridine; m=0(1), +1(1^+)] are investigated theoretically to explore their electronic structures and spectroscopic properties. The ground-state geometry structures of 1 and 1^+ are optimized by the DFT method (B3LYP). The calculated geometry parameters are in agreement with experimental values. Absorption spectra for complexes 1 and 1^+ are predicted at the TDDFT/B3LYP level. For complex 1, the low-energy absorptions have a mixed MLCT/LLCT character, whereas that of 1^+ is LMCT nature.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2007年第10期1695-1699,共5页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金资助项目(No.20173021
20333050
20573042)