respectively, confirming ligand-based oxidation. Electron paramagnetic resonance (EPR) spectroscopy exhibited a typical high spin FeIII (S = 5/2) signal for the neutral complexes in perpendicular mode. Upon oxidation, a signal at g ≈ 9 was observed in parallel mode, suggesting the formation of a spin integer system arising from magnetic interactions between the high spin FeIII center and the phenoxyl radical
的Fe III对称(2络合物的小号,2'小号) - [ Ñ,Ñ ' -双(1-(2-羟基-3,5-二-叔-butylphenylmethyl))] -
2,2'-联
吡咯烷(H 2 L 1)和不对称的(2 S,2 'S)-[ N,N '-(1-(2-羟基-3,5-二
叔丁基苯基
甲基))-2-(
吡啶甲基)]-2制备了带有联
吡咯烷骨架的2,-联
吡咯烷(HL 2)
配体,并研究了中性和单电子
氧化物种的电子结构。FeL的循环伏安图(CV)1 Cl和FeL 2 Cl 2显示出预期的
氧化还原波,对应于
酚盐部分
氧化成
苯氧基自由基,这是通过用1当量的合适
化学氧化剂处理络合物来实现的。中性配合物从干净转变为
氧化态的过程通过UV-vis-NIR光谱仪进行监测,其中出现了
苯氧基自由基的强烈π-π*跃迁特征( [FeL 1 Cl] +•:25 500 cm –1( 9000 M –1 cm –1); [ FeL 2 Cl