dichloromethane. The Co3+/2+-centred redox event leads to a spin transition between the paramagnetic high-spin (HS) Co2+ and the diamagnetic low-spin (LS) Co3+ state, which was proven using 1H NMR and EPR spectroscopy. After one-electron oxidation of [Co(L)2](ClO4)2, an equilibrium between the diamagnetic [Co3+(L)]3+ and paramagnetic [Co2+(L)(L+)]3+ state in [Co(L)2]3+ (L = 1a–c) was found. Cyclic voltammetry
络合物[CO(大号)2 ](CLO 4)2(大号= Ö取代的2-(
吡啶-2-基)-1,10-
菲咯啉1A-1C含有三个氧化还原活性中心)(共2+离子和已合成了两个三芳基胺(Tara)单元。[Co(L)2 ](ClO 4)2(L = 1a–c中的氧化步骤顺序使用循环伏安法和EPR / UV-vis-NIR光谱电
化学法测定)。在
乙腈溶液中,在室温下,首先进行氧化共中心化,然后在更高的阳极电势下进行塔拉氧化。在极性较小的溶剂
二氯甲烷溶液中,氧化顺序相反。以Co 3 + / 2 +为中心的氧化还原事件导致顺磁性高自旋(HS)Co 2+与抗磁性低自旋(LS)Co 3+态之间发生自旋跃迁,这已通过1 H NMR和EPR光谱学。[Co(L)2 ](ClO 4)2单电子氧化后,抗磁性[Co 3+(L)] 3+和顺磁性[Co 2+(L)(L +)] 3+处于[Co(L)2 ] 3+(L = 1a–c)状态。循环伏安法表明[Co