The peak oxidation potentials of a series of polysubstituted triphenylamines were found to be highly linearly correlated (R=0.995) with their ionization potentials as computed by density functional theory. The computations, as well as confirming previous experiments demonstrating the planar geometry of such substances around the central nitrogen atom, also demonstrate substantial resonance interactions
通过密度泛函理论计算,发现一系列多取代的
三苯胺的峰值氧化电位与它们的电离电位高度线性相关(R = 0.995)。计算以及证实了先前实验的结果表明了这类物质在中心氮原子周围的平面几何形状,还证明了中心氮原子与位于其对位或邻位的硝基之间存在实质性的共振相互作用。相应的胺阳离子自由基中不涉及这种相互作用。在另一方面,甲氧基位于对位与在阳离子中心氮中心氮原子相互作用强烈基团,但不 在中性胺中。