Photo-induced oxidation of [FeII(N4Py)CH3CN] and related complexes
Photo-induced oxidation of [FeII(N4Py)CH3CN] and related complexes
复制标题
DOI：
10.1039/c2dt30392b
复制
发表时间：
2012-01-01
影响因子：
4
通讯作者：
Browne, Wesley R.
中科院分区：
文献类型：
--
作者：
Draksharapu, Apparao;Li, Qian;Browne, Wesley R.
描述了配合物[Fe(N4Py)(CH3CN)](ClO4)(2)(1)，其中N4Py为1,1-二（吡啶-2-基）-N， n-双（吡啶-2-基甲基）乙胺和[Fe(MeN4Py)(CH3CN)](ClO4)(2)(2)，其中MeN4Py为1,1-二（吡啶-2-基）-N， n-双（吡啶-2-基甲基）乙胺在水、二氯甲烷和甲醇中的光化学反应。在紫外或可见光照射下，1和2向O-3(2)的外球电子转移速率加快，生成超氧自由基阴离子和Fe（III）氧化还原态的配合物。在光产物中加入抗坏血酸可以恢复初始的紫外/可见光谱1和2，表明配体没有发生氧化。这些结果是在最近报道的在紫外和可见光照射下增强1的氧化DNA切割活性的背景下进行讨论的（Inorg）。化学，2010,49,11009)。
The photochemistry of the complexes [Fe(N4Py)(CH3CN)](ClO4)(2) (1), where N4Py is 1,1-di(pyridin-2-yl)-N, N-bis(pyridin-2-ylmethyl) methanamine and [Fe(MeN4Py)(CH3CN)](ClO4)(2) (2), where MeN4Py is 1,1-di(pyridin-2-yl)-N, N-bis(pyridin-2-ylmethyl)ethanamine, in water, dichloromethane and methanol is described. Under UV or visible irradiation both 1 and 2 undergo enhancement of the rate of outer sphere electron transfer to O-3(2) to yield the superoxide radical anion and the complexes in the Fe(III) redox state. Addition of ascorbic acid to the photoproduct leads to a recovery of the initial UV/Vis spectrum of 1 and 2, indicating that ligand oxidation does not occur. The results are discussed within the context of the recent report of the enhancement of the oxidative DNA cleavage activity of 1 under UV and visible irradiation (Inorg. Chem. 2010, 49, 11009).