Ground-State Copper(III) Stabilized by N-Confused/N-Linked Corroles: Synthesis, Characterization, and Redox Reactivity
作者:Yogesh Kumar Maurya、Katsuya Noda、Kazuhisa Yamasumi、Shigeki Mori、Tomoki Uchiyama、Kazutaka Kamitani、Tomoyasu Hirai、Kakeru Ninomiya、Maiko Nishibori、Yuta Hori、Yoshihito Shiota、Kazunari Yoshizawa、Masatoshi Ishida、Hiroyuki Furuta
DOI:10.1021/jacs.8b01876
日期:2018.6.6
Stable square planar organocopper(III) complexes (CuNCC2, CuNCC4, and CuBN) supported by carbacorrole-based tetradentate macrocyclic ligands with NNNC coordination cores were synthesized, and their structures were elucidated by spectroscopic means including X-ray crystallographic analysis. On the basis of their distinct planar structures, X-ray absorption/photoelectron spectroscopic features, and
合成了稳定的方形平面有机铜 (III) 配合物(CuNCC2、CuNCC4 和 CuBN),由具有 NNNC 配位核的基于卡巴克罗的四齿大环配体支撑,并通过光谱手段(包括 X 射线晶体学分析)阐明了它们的结构。基于它们独特的平面结构、X 射线吸收/光电子光谱特征和与温度无关的抗磁性性质,这些有机铜配合物可以优选地被视为新型有机铜 (III) 物种。配合物的高价 Cu(III) 状态的显着稳定性源于封闭壳电子结构,该结构源自 corrole 修饰骨架的特殊 NNNC 配位,这与常规 corrole 铜的氧化还原非无辜自由基性质形成对比(II) 具有 NNNN 核的复合物。所提出的结构得到了 DFT (B3LYP) 计算的支持。此外,通过单电子氧化 CuNCC4 获得了通过内部碳连接的 π 层合二聚体结构。我们设想精确操纵这些有机金属 corole 配合物的分子轨道能量和氧化还原谱最终可能导致