钳子运动
抗芳香性
化学
密度泛函理论
阳离子聚合
电化学
氧化还原
结晶学
吸收光谱法
钳形配体
光化学
氧化态
离子
配体(生物化学)
光谱学
芳香性
无机化学
分子
计算化学
物理化学
高分子化学
金属
有机化学
电极
催化作用
生物化学
物理
受体
量子力学
作者
Takahiro Sakurai,Yuya Hiraoka,Hisaaki Tanaka,Yoshihiro Miyake,Norihito Fukui,Hiroshi Shinokubo
标识
DOI:10.1002/anie.202300437
摘要
NiII 3,7,13,17-tetrapyridyl-5,15-diazaporphyrin serves as a double tridentate ligand to PdII ions to provide a pincer-type bispalladium complex. Electrochemical analysis revealed that the bispalladium complex shows excellent ability to accept electrons and reversible redox properties due to the coordination of the two cationic PdII centers to the meso-nitrogen atoms. We isolated and characterized one- and two-electron reduction species of the bispalladium complex. The 20π antiaromatic nature of the two-electron reduction species was confirmed by 1 H NMR spectroscopy, UV/Vis-near-IR (NIR) absorption spectra, and density functional theory (DFT) calculations. X-ray diffraction revealed highly twisted structures for the bispalladium complexes regardless of the oxidation state.
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