作者:G Sarova、D Roussanova、B Jeliazkova、N.D Yordanov、M.A Malik、P O’Brien
DOI:10.1016/s1386-1425(99)00245-0
日期:2000.2
The photochemical reactions of bis(diethyl-diselenocarbamato)copper(II), Cu(Et2dsc)2, complex have been studied in toluene, CH2Cl2, CHCl3 and chloroalkane/EtOH mixed solvents. Charge-transfer irradiation induces intramolecular oxidation of the ligand and reduction of copper(II) to copper(I) as evidenced by EPR and UV-Vis spectra of the complex as well as quantum yield results. When photolysis is carried
在甲苯,CH2Cl2,CHCl3和氯代烷/ EtOH混合溶剂中研究了双(二乙基-二硒代氨基甲酸酯)铜(II),Cu(Et2dsc)2配合物的光化学反应。电荷转移辐射诱导了配体的分子内氧化并将铜(II)还原为铜(I),这由配合物的EPR和UV-Vis光谱以及量子产率结果证明。在CHCl3或CH2Cl2或溶剂混合物CHCl3 / EtOH中进行光解时。CH2Cl2 / EtOH含量低于1:1的EtOH时,初级光产物CuI(Et2dsc)在与氯烷的黑暗反应中进一步氧化,生成相应的顺磁性混合配体CuII(Et2dsc)Cl络合物,并与氯桥连并形成平衡。 EPR沉默的二聚体形式为Cu2(Et2dsc)2Cl2。在低浓度的EtOH时,平衡态转变为二聚体形式,而在混合溶剂CHCl3 / EtOH中,EtOH含量高于1:1时,平衡态转变为CuII(Et2dsc)Cl。提出了反应机理并讨论了乙醇的作用。