核化学与放射化学2011，Vol.33Issue(4)：224-229,6.
双羟基脲与Fe(Ⅲ)的络合及氧化还原反应
Coordination and Redox Reaction of Dihydroxyurea With Fe( Ⅲ )
晏太红 1张柏青 1郑卫芳 1张虎 1左臣 1张宇 1鲜亮 1卞晓艳 1李传博1
作者信息
- 1. 中国原子能科学研究院放射化学研究所,北京102413
- 折叠
摘要
Abstract
The interaction of dihydroxyurea(DHU) with Fe( IE ) was studied by spectropho-tometry and cyclic voltammetry. The results show that DHU forms dark purple complex quickly after mixing with Fe( Ⅲ). Whereas the complex formed is relatively unstable. The decomposition rate constant of the complex k' is estimated to be 0. 031 min-1 at 10 ℃ and c0(DHU)=c0 (FeCl3) = 1. 0 × 10-3 mol/L. Chelation through the N-O oxygen atom and N-O nitrogen atom can be assumed for the complex. It is found that the innermolecular redox occurred between DHU and Fe( Ⅲ) after the formation of complex in solution. The one-electron transfer from DHU to Fe( Ⅲ) is assumed. Fe( Ⅲ ) is reduced to Fe( Ⅱ ), at the same time DHU oxidation occurred.关键词
双羟基脲/Fe(Ⅲ)/配位/氧化还原/反应动力学Key words
dihydroxyurea/ Fe( Ⅲ)/ coordination/ redox/ reaction kinetic分类
化学化工引用本文复制引用
晏太红,张柏青,郑卫芳,张虎,左臣,张宇,鲜亮,卞晓艳,李传博..双羟基脲与Fe(Ⅲ)的络合及氧化还原反应[J].核化学与放射化学,2011,33(4):224-229,6.
