Rutheniumethynyl-triarylamine mixed-valence conjugated system: syntheses, (spectro-)electrochemistry, and theoretical calculations
作者:YA-Ping Ou、Yuxuan Hu、Meng Xu、Aihui Wang、Sheng Hua Liu
DOI:10.1080/00958972.2019.1695125
日期:2019.11.2
Abstract We describe the synthesis and characterization of triarylamine ethynyl ruthenium conjugate (4-OMeC6H4)2N-C6H4-4-C≡C-RuCp* (dppe)}, 3. Its electronic and spectroscopy properties are investigated by anodic voltammetry, IR and UV–vis–NIR spectroelectrochemistry, and density functional theory (DFT) calculations. Results indicate that 3 undergoes two well-defined single-electron redox processes
摘要 我们描述了三芳胺乙炔基钌共轭物 (4-OMeC6H4)2N-C6H4-4-C≡C-RuCp* (dppe)}, 3 的合成和表征。通过阳极伏安法、IR 和UV-vis-NIR 光谱电化学和密度泛函理论 (DFT) 计算。结果表明 3 经历了两个明确定义的单电子氧化还原过程,并且 RuII/III 过程发生在 N0/+ 过程之前,IR 光谱 ν(C≡C) 带从 3 变为 3+ (Δν = 129 cm−1) 和 3+ 的自旋密度分布计算。TDDFT 计算进一步从实验光谱吸收揭示了单氧化 3+ 的 NIR 特征带,我们观察到 NAr2→Ru 电荷转移与 Ru-C≡C→苯桥电荷转移混合。