AbstractWe report the formation of a NpIV complex from the complexation of NpVIO22+ with the redox‐active ligand tBu‐pdiop2−=2,6‐bis[N‐(3,5‐di‐tert‐butyl‐2‐hydroxyphenyl)iminomethyl]pyridine. To the best of our knowledge, this is the first example of the direct complexation‐induced chemical reduction of NpVIO22+ to NpIV. In contrast, the complexation of UVIO22+ with tBu‐pdiop2− did not induce the reduction of UVIO22+, not even after the two‐electron electrochemical reduction of [UVIO2(tBu‐pdiop)]. This contrast between the Np and U systems may be ascribed to the decrease of the energy of the 5 f orbitals in Np compared to those in U. The present findings indicate that the redox chemistry between UVIO22+ and NpVIO22+ should be clearly differentiated in redox‐active ligand systems.
 
                                    摘要 我们报告了 NpVIO22+ 与氧化还原活性
配体 tBu-pdiop2-=2,6- 双[N-(3,5-二叔丁基-2-羟基苯基)亚
氨甲基]
吡啶络合形成 NpIV 复合物的过程。据我们所知,这是直接络合诱导 NpVIO22+ 
化学还原为 NpIV 的第一个实例。相反,UVIO22+ 与 tBu-pdiop2- 的络合并没有诱导 UVIO22+ 的还原,甚至在 [UVIO2(tBu-pdiop)]的双电子电
化学还原之后也没有。Np 和 U 系统之间的这种对比可能是由于 Np 中 5 f 轨道的能量比 U 中的能量低。