A copper(II)âhydroperoxo complex, [Cu(Me6-tren)(OOH)]+ (2), and a copper(II)âcumylperoxo complex, [Cu(Me6-tren)(OOC(CH3)2Ph)]+ (3), were synthesized by reacting [Cu(Me6-tren)(CH3CN)]2+ (1) with H2O2 and cumyl-OOH, respectively, in the presence of triethylamine. These intermediates, 2 and 3, were successfully characterized by various physicochemical methods such as UV-vis, ESI-MS, resonance Raman and EPR spectroscopies, leading us to propose structures of the Cu(II)âOOR species with a trigonal-bipyramidal geometry. Density functional theory (DFT) calculations provided geometric and electronic configurations of 2 and 3, showing trigonal bipyramidal copper(II)âOOR geometries. These copper(II)âhydroperoxo and âcumylperoxo complexes were inactive in electrophilic and nucleophilic oxidation reactions.
通过在
三乙胺存在下,分别将[Cu(Me6-tren)( CN)]2+ (1) 与
H2O2 和苄基
过氧化氢反应,合成了
铜(II)氢过氧化物配合物[Cu(Me6-tren)(OOH)]+ (2) 和
铜(II)苄基过氧化物配合物[Cu(Me6-tren)(OOC(
CH3)2Ph)]+ (3)。这些中间体 2 和 3 通过紫外-可见光谱、电喷雾质谱、共振拉曼光谱和电子顺磁共振光谱等多种物理
化学方法成功表征,从而提出了具有三角双锥几何结构的 Cu(II)-OOR 物种的结构。密度泛函理论(DFT)计算提供了 2 和 3 的几何和电子构型,显示出三角双锥
铜(II)-OOR 几何结构。这些
铜(II)氢过氧化物和苄基过氧化物配合物在亲电和亲核氧化反应中均不活泼。