现场紫外可见光谱电化学方法研究Cu(Ⅱ)(DEADTF)_2配合物的氧化还原行为

Studies on Redox Behaviours of Cu(Ⅱ) (DEADTF)~2 by in Situ UV-Visible Spectroelectrochemistry

本文以电化学及现场光谱电化方法在非质子介质已腈中研究了二乙胺基二硫代甲酸合钢（Ⅱ）配合物Cu（Ⅱ）（DEADTF）2氧化还原行为，指出该配合物在乙腈溶液中可经历一步可逆单电子还原反应及一步不可逆单电子还原反应，同时还可发生一步可逆单电子氧化过程及一步不可逆单电子氧化过程。现场光谱电化学研究结果表明其第一还原反应发生在中心金属铜上，形成一价钢配合物，其第一氧化反应也发生在金属铜上，形成三价铜配合物，而其第二还原和第二氧化反应则均发生在配体上。

In this paper, the redox behaviours of cuprate diethylami nodithioformate Cu (Ⅱ)(DEADTF)2 have been studied in aprotic media acetonitrile by the eletrochemistry and in situspectroelectrochemistry. The studies indi cate that the complex may undergo one step reversible re duction and one step irreversible one and one step reversible oxidation and one step irreversible onewith single electron. The results of in situ spectroelectro chemistry show that the first reduction ison the central metal. Cu which forms Cu(Ⅰ)complex and the first oxidation is on the Cu whichresuits in Cu(Ⅱ) eomplex, both the second reduction and oxidation are on the ligand.