One novel bisferrocene pyrazole derivative, bis [2-(5-trifluoromethyl-3-ferrocenyl) pyrazolyl] methane (abbreviated as (3)), was synthesized and fully characterized. A single crystal of (3) was obtained and solved by X-ray diffraction analysis. The bisferrocene derivative exhibits MLCT (metal to ligand charge transfer) and π→π* transitions in the UV-visible range, which have been verified by density functional theory (DFT) calculations. Its electrochemical properties were studied with the aid of cyclic voltammetry (CV), differential pulse voltammetry (DPV) and rapid scan time-resolved Fourier transform infrared spectroscopy (RS-TRS FT-IR) analysis. Furthermore, the electrochemical mechanism was elucidated based on the results from the cyclic voltabsorptometry (CVA) determination technique. (3) apparently shows a single wave in the cyclic voltammetric experiments which indicates there is no intermediate, however, the intermediate of (3) was observed by employing the RS-TRS FT-IR spectroelectrochemistry technique. The detailed investigation brought us safely to the conclusion that the methylene can also act as a linker, leading to electronic communication in either D–π–D and A–π–A systems.
一种新型双
二茂铁吡唑衍
生物,双[2-(5-三
氟甲基-3-
二茂铁基)
吡唑基]
甲烷(简称(3))被合成并进行了全面的表征。通过X射线衍射分析获得了(3)的单晶并解出了其结构。这种双
二茂铁衍
生物在紫外-可见光范围内表现出MLCT(
金属到
配体电荷转移)和π→π*跃迁,这一点已通过密度泛函理论(DFT)计算得到验证。其电
化学性质借助循环伏安法(CV)、差分脉冲伏安法(DPV)和快速扫描时间分辨傅里叶变换红外光谱(RS-TRS FT-IR)进行了研究。此外,基于循环伏光度法(CVA)测定技术的结果,阐明了其电
化学机制。在循环伏安实验中,(3)明显表现出单波,表明没有
中间体,然而,通过采用RS-TRS FT-IR光谱电
化学技术,观察到了(3)的
中间体。详细的研究使我们安全地得出结论:亚
甲基也可以充当连接子,导致D–π–D和A–π–A系统中的电子通信。