MECHANISM OF PHOTOINDUCED REDOX REACTIONS IN AQUEOUS-SOLUTIONS OF [FE(BPY)(CN)4]2-

被引：0

作者：

SZOKE, J ^{[1
]}

HORVATH, A ^{[1
]}

WOJNAROVITS, L ^{[1
]}

机构：

[1] MTA IZOTOPKUTATO INTEZETE, H-1525 BUDAPEST, HUNGARY

来源：

MAGYAR KEMIAI FOLYOIRAT | 1991年 / 97卷 / 03期

关键词：

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The mechanism of redox reactions by UV excitation of [Fe(bpy)(CN)4]2- in aqueous solutions has been investigated by continuous photolysis, laser kinetic spectroscopy and pulse radiolysis. The hydrated electrons formed have been shown to be scavenged by [Fe(bpy)(CN)4]2-of ground state to form [Fe(bpy)(CN)4]3- characterized by its absorption spectrum and reactions or by other electron scavengers (NO3-, MV2+) to yield oxidizing (.NO2) and reducing (.MV+) intermediates, respectively. It has been pointed out that methylviologen radical is also produced by electron transfer reaction from [Fe(bpy)(CN)4]3-, and disappears in reactions with the ground state iron(II) and iron(III)complexes. The yield of reduced methylviologen, the species wich can transform the light to chemical energy, can be optimized based on the kinetic model presented.

引用

页码：132 / 138

页数：7

共 27 条

[1] TABLES OF BIMOLECULAR RATE CONSTANTS OF HYDRATED ELECTRONS HYDROGEN ATOMS AND HYDROXYL RADICALS WITH INORGANIC AND ORGANIC COMPOUNDS [J].