N,N-二甲基-3-氧杂-戊酰胺酸与Np(Ⅳ),Pu(Ⅳ)配合物稳定常数的测定

Determination of Stability Constants for Np(Ⅳ) and Pu(Ⅳ) With N,N-dimethyl-3-oxa-glutaramic Acid

摘要: 应用溶剂萃取法研究了N,N二甲基3氧杂戊酰胺酸(DOGA)与Np(Ⅳ),Pu(Ⅳ)的配位行为。研究结果表明,DOGA与Np(Ⅳ),Pu(Ⅳ)在25℃可以形成比较稳定的配合物,配合物的逐级累积稳定常数分别为:Pu(DOGA)+3:lgβ1=6.52,lgβ2=9.14,lgβ3=15.77;Np(DOGA)+3:lgβ1=6.95,lgβ2=10.435,lgβ3=14.93。

Abstract: The action of synthesizing of N,N-dimethyl-3-oxa-glutaramic acid (DOGA) with Np(Ⅳ) and Pu(Ⅳ) is studied by means of the extraction. The results of study show that DOGA with Np(Ⅳ), Pu(Ⅳ) can form complexes whose rations of coordinating are 3∶1 at 25 ℃. The stability constants of the complexes are: Pu(DOGA)~+_3, lg β_1=6.52,lg β_2=9.14,lg β_3=15.77;Np(DOGA)~+_3,lg β_1=6.95,lg β_2=10.435,lg β_3=14.93.