porphyrins bearing one or two bulky nitrogen donors at the meso positions were prepared by using Ullmann methodology or more classical Buchwald–Hartwig amination reactions to create the new C-N bonds. For several new compounds, single crystals were obtained, and the X-ray structures were solved. The electrochemical data of these compounds are reported. For a few representative examples, spectroelectrochemical
通过使用 Ullmann 方法或更经典的 Buchwald-Hartwig 胺化反应来创建新的 CN 键,制备了一系列在中间位置带有一个或两个大体积氮供体的
镍 (II)
卟啉。对于几种新化合物,获得了单晶,并解析了 X 射线结构。报告了这些化合物的电
化学数据。对于一些有代表性的例子,光谱电
化学测量被用来阐明电子交换过程。此外,还进行了详细的电子顺磁共振 (EPR) 研究,以估计生成的自由基阳离子的离域程度。特别是,电子核双共振光谱 (ENDOR) 用于确定耦合常数。进行 DFT 计算以证实 EPR 光谱数据。